KETO OATMEAL RAISIN COOKIES
A Note on “Keto” Labelling
This recipe is labelled flexible keto because it’s no “strict” but is designed to reduce blood sugar impact through intentional ingredient choices and traditional fermentation methods — not because it requires strict dieting.
Many people looking for healthier recipes, improved digestion, or more stable energy enjoy these cookies successfully, even if they don’t follow a strict ketogenic diet.
A Cookie That Brings Back Sunday Afternoons
I’ll never forget the first time I pulled a batch of these cookies from the oven.
The kitchen smelled like my grandmother’s house on Sunday afternoons — warm cinnamon and sweet raisins — except these cookies fit perfectly into my flexible keto lifestyle.
After years of missing real oatmeal raisin cookies, discovering how hemp hearts and sourdough discard could recreate that nostalgic chew and flavour felt like unlocking a secret level in low-carb baking.
Why These Keto Cookies Actually Taste Like Real Cookies
The beauty of these keto cookies lies in their authentic texture and familiar taste.
These aren’t those crumbly, disappointing keto cookies that fall apart when you look at them. These have:
- Crispy edges
- Soft, chewy centers
- A real oatmeal-cookie bite
They deliver true comfort food — without the blood sugar roller coaster.
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Why This Recipe Works
✔️ Authentic texture from hemp hearts and oats
✔️ Low net carbs that fit strict keto macros
✔️ Living sourdough fermentation for flavour and potential digestive support
✔️ Naturally sweetened with monk fruit based brown sugar sweetener
✔️ Grain-free protein base from hemp hearts that are fermented
✔️ Freezer-friendly for up to 3 months
Keto Categories
Keto Flexible | Keto Dirty | Keto Heart Healthy | Keto Diabetic
Perfect for keto enthusiasts, low-carb dieters, gluten-free bakers, sourdough lovers, and anyone seeking high-protein snack options.
What Makes These Keto Cookies Different?
Traditional oatmeal raisin cookies contain 20–30g net carbs per cookie from refined flour, sugar, and excessive oats.
Most keto cookie recipes rely heavily on almond flour alone, which creates a sandy, one-note texture that never quite satisfies.
This Recipe Flips the Formula
The game-changer is the combination of hemp hearts and controlled portions of old-fashioned rolled oats.
Why This Works
- Hemp hearts provide protein, healthy omega-3 fats, and tender chew
- When fermented, hemp hearts mimic oatmeal texture and possess reduced phytic acid
- You can use fewer oats while keeping authentic flavour
- Sourdough discard adds fermented complexity and depth of flavor
What Sets These Cookies Apart
- Real oats in controlled portions
- Hemp hearts instead of almond-flour overload
- Living sourdough discard
- Flame raisins for concentrated sweetness
- Monk fruit brown sweetener for molasses notes
- No weird aftertaste from excessive sweeteners
Why Does This Keto Cookie Recipe Work?
✔️ High protein from complete hemp protein
✔️ Ultra-low net carbs
✔️ Simple grocery-store ingredients
✔️ Meal-prep friendly
✔️ Blood-sugar-stable sweetening
✔️ Potential gut-health support from fermentation
✔️ Omega-3 rich fats
✔️ Real oatmeal-style chew
Health Benefits of the Key Ingredients
Hemp Hearts
Complete Protein Source
Contain all nine essential amino acids for satiety and muscle support.
Omega-3 Powerhouse
Supports cardiovascular and brain health.
Mineral-Rich
High in magnesium, iron, and zinc.
Sourdough Discard
Prebiotic Compounds
Fermentation may support gut microbiome diversity.
Improved Nutrient Absorption
Fermentation may reduce antinutrients.
Lower Glycemic Response
Fermented foods often digest more gently.
Flame Raisins
Concentrated Natural Sweetness
More flavour with less quantity.
Antioxidant Content
Contain polyphenols that may support cellular health.
Quick Energy
Balanced by fiber and fats in this recipe.
Ingredients for Keto Oatmeal Raisin Cookies
Wet Ingredients
- ½ cup sourdough discard (unfed)
- 1/2 cup butter, melted
- 2 medium sized eggs
- 1 teaspoon vanilla extract
Dry Ingredients
- 1 cup raw hemp hearts
- 1 cup old-fashioned rolled oats
- ½ cup monk fruit brown sweetener
- 1 tablespoon double acting baking powder
- 1 heaping teaspoon cinnamon
- ¼ tsp nutmeg (optional)
- ¼ tsp salt (optional)
Mix-Ins
- 2 tablespoons Flame raisins, diced
- 1/4 cup walnut pieces
Ingredient Substitutions
Sweeteners
Monk fruit and/or stevia best for brown sugar and granular sweetener
Hemp Hearts
❌ Do not substitute — protein powder or almond flour will not work.
Oats
Use only hemp hearts
Butter
Coconut oil or ghee are acceptable substitutes.
Raisins
Sugar-free chocolate chips, nuts, or dried cranberries work well.
Equipment Needed
- Baking sheet
- Parchment paper
- Large mixing bowl
- Medium mixing bowl
- Whisk
- Spatula
- Cookie scoop
- Wire rack
How to Make Keto Oatmeal Raisin Cookies
- Preheat oven to 350°F (175°C) and line baking sheets.
- In a small bowl combine hemp hearts with Biome Boss™ sourdough discard
- Whisk together butter, eggs and vanilla until smooth.
- Add discard and other dry ingredients. Whisk thoroughly.
- Cover with plastic and refrigerator for 60 minutes to firm dough.
- Portion dough into golf ball sized pieces
- Set each ball on the cookie sheet lined with parchment.
- Put dough ball into cookie cutter and press down with fingers to shape cookie.
- Add diced raisins and walnut pieces to top of cookie.
- Carefully push cookie through bottom of cookie cutter and repeat for all the balls.
- Bake 15 to 20 minutes until edges are golden.
- Cool on baking sheet for a few minutes and then transfer to wire rack to fully set texture.
Common Keto Cookie Mistakes (and Fixes)
Cookies Spread Too Much
- Dough too wet → add hemp hearts
- Skip flattening → cookies must be shaped
Cookies Too Dry
- Overbaked
- Not enough butter
Hemp Flavour Too Strong
- Use raw, not toasted, hemp hearts
- Don’t reduce sweetener
Cookies Fall Apart
- Egg not fully incorporated
- Dry ingredients not evenly mixed
Keto Cookie Variations
- Chocolate Chip
- Cranberry Orange
- Cinnamon Pecan
- Coconut Almond
- Double Chocolate
- Pumpkin Spice (Seasonal)
Nutrition Facts (Approximate)
Nutritional Values (Approximate, Per Cookie)
These nutritional values are provided for guidance only. Please calculate your own values based on the specific brands and products you use, as nutritional information can vary significantly between brands and even between countries selling the same brands.
The nutritional values below are estimates based on the ingredient information provided and divided by 16 cookies when made with sourdough discard. Exact values will depend on the brands of ingredients used. In some cases, the same brand may have different nutritional values in Canada versus the USA. If the sourdough discard is removed and the recipe is instead made as 10 cookies, the nutritional values will change accordingly. Use these values as a general reference and calculate your own numbers for full accuracy.
- Calories: ~141 kcal
- Total Carbs: ~4.0 g
- Fiber: ~1.0 g
- ✅ Net Carbs: ~3.0 g
- Protein: ~5.0 g
- Fat: ~12.3 g
- Sugar: ~0.9 g (mostly from raisins)
How to Serve Keto Oatmeal Raisin Cookies
Snacks
With coffee, tea, or yogurt
Breakfast
With almond butter or eggs
Dessert
Ice-cream sandwiches or cheesecake topping
Special Occasions
Gift boxes, cookie swaps, travel snacks
Storage Instructions
Room Temperature
Up to 3 days
Refrigerator
Up to 1 week
Freezer
Up to 3 months
Why Your First Bake Is a Practice Bake
Ovens, ingredient brands, and taste sensitivity vary.
Take notes. Adjust. Your second bake will be better — your third will be perfect.
That’s the Sinless Sourdough way.
Disclaimer
All information provided is for educational purposes only and is not intended as medical advice.
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PrintKETO OATMEAL RAISIN COOKIES
These keto cookies are a keto-friendly, low-carb recipe that includes a small amount of authentic sourdough fermentation to support flavour, texture, and digestibility.
- Prep Time: 15
- Cook Time: 20
- Total Time: 35
- Yield: 16 (with Discard)
- Category: Dessert
- Method: Baking
- Cuisine: American
- Diet: Keto
Ingredients
Wet Ingredients (Mix First)
- ½ cup sourdough discard
(Unfed, straight from the refrigerator) - ⅓ cup butter, melted
- 1 large egg
- 1 tsp vanilla extract
Dry Ingredients
- 1 cup raw hemp hearts
(Raw, unroasted — not toasted hemp seeds) - 1 cup old-fashioned rolled oats
(Not quick oats) - ½ cup monk fruit brown sweetener
- ½ tsp baking soda
- 1 tsp cinnamon
- ¼ tsp nutmeg
- ¼ tsp salt
Mix-ins
2 tbsp Flame raisins, finely chopped
Instructions
- Preheat oven to 350°F (175°C) and line baking sheets.
- In a small bowl combine hemp hearts with Biome Boss™ sourdough discard
- Whisk together butter, eggs and vanilla until smooth.
- Add discard and other dry ingredients. Whisk thoroughly.
- Cover with plastic and refrigerator for 60 minutes to firm dough.
- Portion dough into golf ball sized pieces
- Set each ball on the cookie sheet lined with parchment.
- Put dough ball into cookie cutter and press down with fingers to shape cookie.
- Add diced raisins and walnut pieces to top of cookie.
- Carefully push cookie through bottom of cookie cutter and repeat for all the balls.
- Bake 15 to 20 minutes until edges are golden.
- Cool on baking sheet for a few minutes and then transfer to wire rack to fully set texture.
Notes
Nutritional Values (Approximate)
Nutritional Values (Approximate, Per Cookie)
These nutritional values are provided for guidance only. Please calculate your own values based on the specific brands and products you use, as nutritional information can vary significantly between brands and even between countries selling the same brands.
The nutritional values below are estimates based on the ingredient information provided and divided by 16 cookies when made with sourdough discard. Exact values will depend on the brands of ingredients used. In some cases, the same brand may have different nutritional values in Canada versus the USA. If the sourdough discard is removed and the recipe is instead made as 10 cookies, the nutritional values will change accordingly. Use these values as a general reference and calculate your own numbers for full accuracy.
Per Cookie (based on 16 cookies)
(Calculate with your own brands for accuracy.)
- Calories: ~141 kcal
- Total Carbs: ~4.0 g
- Fiber: ~1.0 g
- ✅ Net Carbs: ~3.0 g
- Protein: ~5.0 g
- Fat: ~12.3 g
- Sugar: ~0.9 g (mostly from raisins)
Notes
Sweetener Amount Matters:
This recipe uses ½ cup sweetener because sourdough discard adds tang.
If baking without discard, reduce sweetener to ¼ cup.Do Not Substitute Hemp Hearts:
Hemp hearts provide structure, moisture, and oatmeal-style chew.
Protein powder or almond flour will not work.Flatten Before Baking:
These cookies do not spread much. Shape them before baking.Do Not Overbake:
Remove when centers look slightly underdone — they firm as they cool.Storage:
- Room temp: 3 days
- Refrigerator: 7 days
- Freezer: up to 3 months
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DISCLAIMER
All information provided on this website regarding the health benefits of sourdough low carb recipes is intended for educational purposes only. The content presented is not meant to be taken as specific medical advice.
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