90 SECOND KETO SOUTHERN PECAN PIE SQUARES
If you’ve been chasing something that tastes like pecan pie and chia pudding had a delicious low-carb baby — and you can make it in 90 seconds — you’ve just found it.
These 90 Second Keto Southern Pecan Pie Squares are microwaved in a 5.5″ x 5.5″ glass dish, refrigerated until firm, and cut into four generous squares. Rich. Satisfying. And made with ingredients that actually nourish you.
This isn’t a recipe that asks you to stand over the stove for an hour. This is keto baking that fits real life — microwave on, squares in the fridge, done.
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What Makes This Recipe Different
Most keto dessert squares lean on almond flour or coconut flour and end up dense, dry, or oddly crumbly. These squares don’t do any of that.
The structure here comes from chia seeds — and that changes everything. When chia seeds hydrate in warm milk they form a thick gel that acts as both a binder and a pudding base. Combined with egg yolks, melted butter, and toasted pecans the result sets firm enough to hold its shape as a square but melts on your tongue like a proper custard-based dessert.
You can also make these with or without a crust. Skip the crust and fold that 2 tablespoons of butter directly into the filling — it makes them even more delicious and you’ll get cleaner squares out of the dish.
Why These Are Southern Pecan Pie Squares
Pecan pie is Southern. Full stop.
Four things make it authentically Southern:
Toasted Pecans
Southern bakers always toast their pecans. It draws out the deep, buttery, slightly smoky flavour that makes Southern pecan pie taste the way it does. Raw pecans taste flat by comparison.
The Spice
Authentic Southern pecan pie uses cinnamon or nutmeg to warm and deepen the custard filling. Cinnamon brightens the filling. Nutmeg is subtler and more old-fashioned — the kind you’d find in a church cookbook from 1965. Both are correct. Both are Southern.
Salt
Every authentic Southern pecan pie includes a pinch of salt. It sharpens the pecans, balances the sweetness, and pulls everything together.
Restrained Sweetness
True Southern pecan pie is not cloying. The pecan flavour leads. The sweetness is present but never overwhelming. The 1/4 cup sweetener version is the more authentically Southern choice — it lets the toasted pecans carry the flavour.
About Measurements and Precision in Keto Baking
Traditional baking teaches that baking is science — meaning it must be precise.
90 Second Keto baking doesn’t always follow that traditional model.
You may use cups. You may use tablespoons. What matters most is the consistency of your batter and the behaviour of your mixture. Gram measurements, where listed, are approximate reference points based on commonly available brands. Ingredient density can vary depending on:
- Brand
- Grind size
- How tightly ingredients are packed
- Humidity
- Storage conditions
Trust the process and watch the batter, not just the measurements.
Why It Works
Traditional pecan pie relies on corn syrup and sugar to create its thick, glossy filling. That’s also what makes it a significant blood sugar event.
Chia seed gel solves this problem beautifully. When chia seeds hydrate in warm milk they release a natural soluble fibre called mucilage — and that gel behaves remarkably like a custard base. It’s thick. It’s smooth. It sets when chilled.
This is not a compromise version of pecan pie. It’s a structurally honest translation of what pecan pie custard is actually trying to do — without the corn syrup, without the sugar, and with a fraction of the saturated fat.
The Milk Makes a Difference
Your milk choice creates noticeably different results:
- Fairlife whole milk — richest, most convincing pecan pie flavour
- Coconut milk — rich with a hint of coconut, beautiful with pecans
- Unsweetened almond milk — lighter, leans more toward chia pudding
- 35% heavy cream — the full strict keto option, most indulgent custard result
Taste and Texture
Expect warm spiced chia pudding in solid square form. There’s a deep caramel-adjacent flavour from the brown sugar sweetener, nuttiness from toasted pecans, and a subtle richness that lingers.
The texture is firm enough to hold in your hand and soft enough that it melts rather than chews.
One important note on sweetness: at 1/4 cup of sweetener these are barely sweet — intentional for some people. For a true dessert experience go with 1/2 cup. Both versions work perfectly.
Ingredient Breakdown
2 tbsp chia seeds
The structural backbone of this recipe. When hydrated in warm milk chia seeds release a natural soluble fibre that forms a thick gel — mimicking traditional pecan pie custard without the corn syrup or sugar spike. You almost certainly won’t taste them once the pecans and vanilla are in the picture.
1/2 cup milk or cream of choice
Fairlife for maximum richness. Almond milk for lighter results. Coconut milk for richness with a tropical note. Heavy cream for the deepest most indulgent custard base.
2 egg yolks
Fat, richness, and custard texture. Room temperature is fine.
2 tbsp butter, melted
Fold directly into the filling when making without a crust. Adds flavour and richness to every bite.
1/4 to 1/2 cup brown sugar keto sweetener
Sweetener carbs are not counted in the nutritional values as erythritol-based sweeteners have negligible glycemic impact. Start at 1/4 cup for lightly sweet. Go to 1/2 cup for a true dessert experience.
3/4 cup toasted pecan pieces + 1/4 cup toasted whole pecans
Always toast your pecans first — it takes five minutes and makes a significant difference in flavour depth. The pieces fold into the filling. The whole pecans go on top with a sprinkle of brown sugar sweetener that caramelises slightly during microwaving.
1 tsp pure vanilla extract
Rounds out the custard flavour and deepens the pecan pie character.
1/2 tsp cinnamon or nutmeg
The spice that takes these from keto squares to Southern pecan pie squares. Use one or the other — not both.
Pinch of salt
Balances the sweetness, sharpens the pecans, and pulls all flavours into focus. Don’t skip it.
1/2 tsp xanthan gum (optional but recommended)
What pulls these together as squares rather than pudding. Leave it out for a softer, more spoonable result.
Ingredients
- 1/2 cup milk or cream of choice
- 2 tbsp chia seeds
- 2 egg yolks
- 2 tbsp butter, melted
- 1/4 to 1/2 cup brown sugar keto sweetener
- 3/4 cup toasted pecan pieces
- 1/4 cup toasted whole pecans
- 1 tsp pure vanilla extract
- 1/2 tsp cinnamon or nutmeg
- Pinch of salt
- 1/2 tsp xanthan gum (optional but recommended)
Version D — With Almond Flour Crust (add butter to crust only):
- Avocado oil spray for greasing
- 1/2 cup almond flour
- 2 tbsp butter melted (for crust only)
- 2 tbsp protein isolate
Version C — Mugcakes only:
- Substitute unsweetened almond milk
- Reduce to 1/3 cup pecans total
- Use 1/4 cup sweetener
Equipment
- 5.5″ x 5.5″ microwave-safe glass dish
- Microwave
- Small bowl for heating milk
- Mixing bowl
- Refrigerator
That’s the whole list. No stand mixer. No oven. No special pans.
Step-by-Step Instructions
Version D only — Make the crust first
Grease your glass dish with avocado oil spray. Combine 1/2 cup almond flour, 2 tbsp protein isolate, and 2 tbsp melted butter in the dish. Press firmly and evenly into the bottom to form the crust. Set aside.
Step 1 — Warm the milk
Pour 1/2 cup of your chosen liquid into a microwave-safe bowl. Heat for 1 minute.
Step 2 — Make the chia gel
Add 2 tablespoons of chia seeds to the warm milk. Stir to combine. Let sit for 5 to 10 minutes until thickened into a gel. Don’t rush this step.
Step 3 — Add remaining filling ingredients
Once the chia gel has formed add the 2 egg yolks, 2 tablespoons of melted butter (if making without crust), 1 teaspoon of vanilla extract, 1/2 tsp cinnamon or nutmeg, a pinch of salt, and your brown sugar sweetener. Mix well.
Step 4 — Add xanthan gum (optional)
If using add 1/2 tsp xanthan gum and stir through.
Step 5 — Fold in pecan pieces and pour
Fold the 3/4 cup of toasted pecan pieces into the filling. Pour into your glass dish and spread evenly.
Step 6 — Top and finish
Arrange the 1/4 cup of whole toasted pecans across the surface. Sprinkle with a little brown sugar sweetener for a lightly caramelised top.
Step 7 — Microwave uncovered
Microwave on high for 90 seconds with no lid. Do not cover — you want the top to set not steam.
Step 8 — Cool and refrigerate
Let cool slightly then refrigerate for at least a few hours or overnight. Don’t cut them too soon.
Step 9 — Slice and serve
Slice into 4 squares. The first square may break apart if you’ve used a crust — the other three will come out cleanly. All four taste exactly the same.
Common Mistakes
Covering the dish in the microwave
These squares are microwaved uncovered. A lid traps steam and prevents the top from setting properly.
Skipping the gel formation step
Adding the egg yolks to chia seeds that haven’t fully gelled results in a looser filling that doesn’t set as firmly.
Cutting the squares before they’ve set
The refrigerator finishes what the microwave starts. A few hours minimum — overnight is ideal.
Under-sweetening and assuming the recipe is the problem
At 1/4 cup of sweetener these squares are very lightly sweet. Increase to 1/2 cup if your first batch tasted bland.
Using cold milk
Heat the milk first. Warm milk activates the chia gel more effectively.
Variations
Strict keto / lowest carb version
Unsweetened almond milk + 1/4 cup sweetener. Skip the crust. Approximately 1.0g net carbs per half square.
Richest / most pecan pie-like version
Fairlife whole milk + 1/2 cup sweetener. Skip the crust and fold the butter into the filling. Approximately 1.1g net carbs per half square.
Full-out strict keto version
Swap milk for 35% heavy cream. The most pecan pie-like richness this recipe can deliver.
Version D — With Almond Flour Crust
Grease your glass dish first. Combine almond flour, protein isolate, and melted butter. Press into bottom of dish. Proceed with filling as normal. Remember — butter goes in the crust OR the filling, not both.
Version C — 90 Second Keto Southern Pecan Pie Mugcakes
Use unsweetened almond milk, 1/4 cup sweetener, and reduce pecans to 1/3 cup total. Divide filling between 4 mugs and microwave each individually for 90 seconds. Eat warm from the mug with a spoon.
Coconut milk variation
A rich result with a mild coconut flavour — a beautiful pairing with toasted pecans.
Nutritional Values
Important note: Values listed are estimates based on specific brands. Your numbers will vary. Always use the labels on your specific ingredients. Sweetener carbs are not counted as they have negligible glycemic impact.
Version A — Fairlife Whole Milk + 1/2 Cup Sweetener + 1 Cup Pecans
Full recipe:
- Calories: 1,269
- Net carbs: 9.5g
- Fibre: 16.4g
- Protein: 24.3g
- Fat: 101.7g
1 square:
- Calories: 317
- Net carbs: 2.4g
- Fibre: 4.1g
- Protein: 6.1g
- Fat: 25.4g
1/2 square:
- Calories: 159
- Net carbs: 1.2g
- Fibre: 2.0g
- Protein: 3.0g
- Fat: 12.7g
Version B — Unsweetened Almond Milk + 1/4 Cup Sweetener + 1 Cup Pecans
Full recipe:
- Calories: 1,116
- Net carbs: 8.8g
- Fibre: 16.7g
- Protein: 18.4g
- Fat: 98.9g
1 square:
- Calories: 279
- Net carbs: 2.2g
- Fibre: 4.2g
- Protein: 4.6g
- Fat: 24.7g
1/2 square:
- Calories: 140
- Net carbs: 1.1g
- Fibre: 2.1g
- Protein: 2.3g
- Fat: 12.4g
Version C — Mugcakes — Almond Milk + 1/4 Cup Sweetener + 1/3 Cup Pecans
Full recipe (4 mugcakes):
- Calories: 660
- Net carbs: 5.9g
- Fibre: 10.4g
- Protein: 12.3g
- Fat: 51.4g
1 mugcake:
- Calories: 165
- Net carbs: 1.5g
- Fibre: 2.6g
- Protein: 3.1g
- Fat: 12.9g
1/2 mugcake:
- Calories: 83
- Net carbs: 0.7g
- Fibre: 1.3g
- Protein: 1.5g
- Fat: 6.4g
Version D — With Almond Flour Crust — Fairlife + 1/2 Cup Sweetener + 1 Cup Pecans
Full recipe:
- Calories: 1,451
- Net carbs: 11.5g
- Fibre: 19.4g
- Protein: 35.9g
- Fat: 115.7g
1 square:
- Calories: 363
- Net carbs: 2.9g
- Fibre: 4.9g
- Protein: 9.0g
- Fat: 28.9g
1/2 square:
- Calories: 182
- Net carbs: 1.4g
- Fibre: 2.4g
- Protein: 4.5g
- Fat: 14.5g
Storage
Store in an airtight container in the refrigerator for up to 5 days. These squares actually improve overnight as the flavours deepen and the texture firms further.
These squares do not freeze well — the chia gel structure changes on thawing.
Alternative Baking — Convection Oven, Toaster Oven, or Air Fryer
No microwave? No problem. These squares bake beautifully at 350°F (175°C) — and the oven method gives the top a more golden, set appearance that looks stunning when serving guests.
Prepare the filling exactly as you would for the microwave version. Pour into your greased glass dish, top with whole pecans and the sweetener sprinkle, then bake uncovered for 8 to 12 minutes.
Start checking at 8 minutes. You’re looking for set edges and a slight jiggle in the centre — like a just-set cheesecake. The refrigerator will finish the job.
- Convection oven: Check at 8 minutes. The sweetener sprinkle will caramelise more visibly than in the microwave
- Toaster oven: Check at 8 minutes. If your oven runs hot reduce to 325°F
- Air fryer: Works well for individual ramekins. Check at 8 minutes
The Practice Batch Philosophy
The first time you make these you’re learning how your microwave behaves, how firmly your chia gel sets, and how sweet you like the result. That’s your practice batch. Make notes. Adjust the sweetener. Decide whether you want the xanthan gum.
By the second batch you’ll have a personalised version dialled in that consistently hits exactly what you want.
The good news: even your first batch will be delicious.
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Print90 SECOND KETO SOUTHERN PECAN PIE SQUARES
Make these 90 Second Keto Southern Pecan Pie Bars in your microwave with just a few ingredients. Rich, satisfying, and as low as 1.1g net carbs per half bar. Drizzle in sugar free maple syrup for pure decadent pleasure!
- Prep Time: 5 minutes
- Cook Time: 90 Seconds
- Total Time: 6 Minutes 30 seconds
- Yield: 4 (OR 8)
- Category: Dessert, Snack
- Method: Air Fryer, Convection Oven, Microwave, Toaster Oven
- Cuisine: American
- Diet: Diabetic, Keto, Low-Carb
Ingredients
- 1/2 cup milk or cream of choice (Fairlife whole milk, unsweetened almond milk, coconut milk, or 35% heavy cream)
- 2 tbsp chia seeds
- 2 egg yolks
- 2 tbsp butter, melted
- 1/4 to 1/2 cup brown sugar keto sweetener (such as Swerve Brown Sugar)
- 3/4 cup toasted pecan pieces
- 1/4 cup toasted whole pecans (for topping)
- 1 tsp pure vanilla extract
- 1/2 tsp cinnamon or nutmeg
- Pinch of salt
- 1/2 tsp xanthan gum (optional but recommended for firm bars)
For Version D — With Almond Flour Crust (add butter to crust only, not filling):
- Avocado oil or avocado oil spray (for greasing dish)
- 1/2 cup almond flour
- 2 tbsp butter, melted (use in crust instead of filling)
- 2 tbsp protein isolate (zero fat, zero carbs)
For Version C — Mugcakes only:
- Substitute unsweetened almond milk
- Reduce to 1/3 cup pecans total
- Use 1/4 cup sweetener
Instructions
Version D only — Make the crust first. Grease your 5.5″ x 5.5″ glass dish with avocado oil or avocado oil spray. Add 1/2 cup almond flour, 2 tbsp protein isolate, and 2 tbsp melted butter to the dish. Mix together and press firmly and evenly into the bottom to form the crust. Set aside while you make the filling. Remember: if you’ve used butter in the crust, do not add butter to the filling.
Step 1 — Warm the milk or cream. Pour 1/2 cup of your chosen liquid — milk, almond milk, coconut milk, or 35% heavy cream — into a microwave-safe bowl. Heat for 1 minute.
Step 2 — Make the chia gel. Add 2 tablespoons of chia seeds to the warm milk. Stir to combine. Let sit until the mixture has thickened into a gel — this takes roughly 5 to 10 minutes. Don’t rush this step. You want full gel formation before you add the yolks.
Step 3 — Add the remaining filling ingredients. Once the chia gel has formed, add the 2 egg yolks, 2 tablespoons of melted butter (if making without crust), 1 teaspoon of vanilla extract, 1/2 tsp cinnamon or nutmeg, a pinch of salt, and your brown sugar sweetener of choice (1/4 cup for lightly sweet, 1/2 cup for dessert-level sweet). Mix well to combine.
Step 4 — Add xanthan gum (optional). If using, add 1/2 tsp xanthan gum now and stir through.
Step 5 — Fold in the pecan pieces and pour. Fold the 3/4 cup of toasted pecan pieces into the filling. Pour the mixture into your glass dish and spread evenly.
Step 6 — Top and finish. Arrange the 1/4 cup of whole toasted pecans across the surface. Sprinkle with a little brown sugar sweetener — this creates a lightly caramelised top as it microwaves and makes the bars look finished straight out of the dish.
Step 7 — Microwave uncovered. Microwave on high for 90 seconds with no lid. Do not cover — you want the top to set, not steam.
Step 8 — Cool and refrigerate. Let cool slightly on the counter, then transfer to the refrigerator for at least a few hours or overnight. The bars need this time to firm up properly. Don’t cut them too soon.
Step 9 — Slice and serve. Once set, slice into 4 squares. The first bar may break apart if you’ve used a crust — the other three will come out cleanly. All four taste exactly the same.
Notes
For nutritional values see blog.
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