Donuts are a beloved treat known for their fluffy texture, sweet flavor, and indulgent frosting, but traditional versions are typically off-limits on a keto or low-carb diet due to their sugar and carbohydrate content. These Keto Blueberry Donuts bring all the joy of a classic donut with a healthier twist — built on fiber-rich almond flour and coconut flour, which keep them low in carbs while still full of good fats. Fresh blueberries add a burst of antioxidants, while a sugar substitute keeps things sweet without spiking blood sugar.
This recipe works well as a keto breakfast option, a low-carb snack, or a treat for a brunch spread. It’s genuinely easy to make, needs just a handful of basic ingredients, and bakes in under an hour.
Why Choose Keto Blueberry Donuts
Low-carb and keto-friendly. Traditional donuts lean on refined sugar and wheat flour, both unsuitable for a keto or low-carb lifestyle. This recipe swaps in almond flour and coconut flour instead, both naturally low in carbohydrates and gluten-free, with a sugar substitute standing in for regular sugar.
High in fiber. Both almond flour and coconut flour are packed with fiber, which supports a healthy digestive system and helps with feeling full longer — especially useful on a keto diet.
Packed with antioxidants. Blueberries bring more than flavor — they’re a genuine source of antioxidants known for anti-inflammatory properties, supporting heart health, memory function, and a reduced risk of certain chronic diseases, alongside their natural sweetness.
No mixer needed. This recipe doesn’t require a stand mixer or complex equipment — a large mixing bowl and a spoon or hand mixer is all it takes.
Versatile and customizable. Blueberries can easily be swapped for other keto-friendly fruits like raspberries, strawberries, or a mix of berries. Chopped nuts, unsweetened coconut flakes, or sugar-free chocolate chips can be added for extra indulgence.
Key Ingredients
Almond flour is a staple in keto baking — lower in carbs than wheat flour, and high in healthy fats, protein, and fiber, which helps stabilize blood sugar levels.
Coconut flour is another keto-friendly flour, high in fiber and low in carbs. Its natural absorbency gives the donuts a more cake-like texture without turning overly dry, and its subtle coconut flavor pairs nicely with the blueberries.
Baking powder helps the donuts rise and gives them that soft, light texture — using fresh baking powder makes a real difference here.
Sea salt balances the flavors and enhances the sweetness, bringing out the best in both the dry and wet ingredients.
Granulated sugar substitute (like erythritol, stevia, or monk fruit sweetener) maintains the sweetness of the donuts without the added carbs of regular sugar.
Sour cream adds moisture and richness to the batter, keeping the donuts tender and fluffy, while contributing a slightly tangy flavor that balances the sweetness.
Eggs act as the binder, holding the donuts together and adding structure, richness, and protein.
Fresh or frozen blueberries add natural sweetness and a pop of color. Frozen blueberries don’t need to be thawed first — they can be folded in straight from frozen.
Unsalted butter adds richness and moisture; using unsalted lets you control the total salt content of the recipe.
Keto icing finishes the donuts with sweetness and a slight crunch, made from a confectioners’ sugar substitute, melted butter, and vanilla extract.
Mise en Place
For the Donuts:
- 1½ cups finely milled almond flour
- ½ cup coconut flour
- 1½ teaspoons baking powder
- ¼ teaspoon sea salt
- ½ cup granulated sugar substitute
- 1 teaspoon vanilla extract
- ½ cup full-fat sour cream
- 3 large eggs (room temperature)
- 1 cup fresh or frozen blueberries
- ¼ cup unsalted melted butter, cooled
For the Icing:
- 2 tablespoons melted butter
- ¾ cup confectioners’ sugar substitute
- ¼ teaspoon sea salt
- ½ teaspoon vanilla extract
- 3–4 tablespoons hot water
Timing Overview
- Prep Time: 20 minutes
- Cook Time: 25 minutes
- Cooling Time: 10 minutes
- Total Time: 55 minutes
- Yields: 12 donuts
Workflow: How It Comes Together
- Prepare the donut pans.
- Mix the dry ingredients.
- Combine the wet ingredients.
- Bring wet and dry together.
- Fold in the blueberries.
- Pipe into the pans and bake.
- Cool completely.
- Make and apply the icing.
- Store.
Step 1: Prepare the Donut Pans
Preheat the oven to 350°F (175°C). Grease two 6-cavity donut pans generously to prevent sticking. A muffin pan can work as an alternative if a donut pan isn’t available, though the shape will differ.
Step 2: Mix the Dry Ingredients
In a large mixing bowl, combine the almond flour, coconut flour, baking powder, sea salt, and granulated sugar substitute. Whisk together until fully incorporated.
Step 3: Combine the Wet Ingredients
In another bowl, whisk together the sour cream, vanilla extract, and eggs (at room temperature). Add the melted, cooled butter and stir until smooth. Mixing the eggs in evenly helps the batter come together consistently.
Step 4: Combine Wet and Dry Ingredients
Gradually add the wet ingredients to the dry ingredients, mixing with a hand mixer or spoon until the batter is smooth and fully combined. The consistency should be thick but smooth, similar to a muffin batter.
Step 5: Fold in the Blueberries
Carefully fold the blueberries into the batter, distributing them evenly while being gentle enough not to break them.
Step 6: Pipe the Batter into the Donut Pans
A ziplock bag with the tip cut off works well as a makeshift piping bag for filling the donut cavities. Fill each cavity up to the rim, since these donuts don’t rise much during baking. Spooning the batter in works too if a piping method isn’t available.
Step 7: Bake the Donuts
Bake for 25–30 minutes, or until a toothpick inserted into the center comes out clean. The donuts should be golden brown on top and firm to the touch.
Step 8: Cool the Donuts
Let the donuts cool completely at room temperature before removing them from the pans — this helps them firm up and makes them much easier to handle without breaking.
Step 9: Prepare the Keto Icing
While the donuts cool, melt the butter and add it to a small bowl. Stir in the confectioners’ sugar substitute, sea salt, and vanilla extract. Slowly add the hot water, a little at a time, until the icing reaches a smooth, pourable consistency.
Step 10: Frost the Donuts
Once the donuts are fully cooled, quickly dip each one into the icing, letting any excess drip off before setting them on a baking rack to dry. The icing hardens into a thin, frosted shell as it sets.
Step 11: Store the Donuts
Once the icing has set, store the donuts in an airtight container in the refrigerator for up to 5 days, or freeze for up to 3 weeks. Let them come to room temperature before eating for the best flavor and texture.
Quick and Easy Keto Blueberry Donuts
Description: Fluffy, low-carb donuts made with almond and coconut flour, studded with fresh blueberries and topped with a keto-friendly icing — a satisfying donut without the sugar or carb overload.
Prep Time: 20 minutes Cook Time: 25 minutes Cooling Time: 10 minutes Total Time: 55 minutes Yields: 12 donuts
Ingredients:
For the Donuts:
- 1½ cups finely milled almond flour
- ½ cup coconut flour
- 1½ teaspoons baking powder
- ¼ teaspoon sea salt
- ½ cup granulated sugar substitute
- 1 teaspoon vanilla extract
- ½ cup full-fat sour cream
- 3 large eggs (room temperature)
- 1 cup fresh or frozen blueberries
- ¼ cup unsalted melted butter, cooled
For the Icing:
- 2 tablespoons melted butter
- ¾ cup confectioners’ sugar substitute
- ¼ teaspoon sea salt
- ½ teaspoon vanilla extract
- 3–4 tablespoons hot water
Instructions:
- Preheat the oven to 350°F (175°C) and grease two 6-cavity donut pans.
- Whisk together the almond flour, coconut flour, baking powder, sea salt, and sugar substitute.
- Add the sour cream, melted butter, vanilla extract, and eggs, and mix until smooth.
- Gently fold in the blueberries.
- Pipe the batter into the donut pans, filling to the rim.
- Bake for 25–30 minutes, until a toothpick comes out clean.
- Let the donuts cool completely before removing from the pans.
- Combine the melted butter, sugar substitute, vanilla extract, sea salt, and hot water for the icing until smooth.
- Dip the cooled donuts into the icing and let them dry on a cooling rack.
- Store in an airtight container for up to 5 days, or freeze for up to 3 weeks.
Notes:
- Frozen blueberries can be folded in directly without thawing.
- Fill the donut cavities to the rim, since this batter doesn’t rise much during baking.
- Let the donuts cool completely before removing from the pan to prevent breaking.
- Bring refrigerated or frozen donuts to room temperature before eating for the best texture.
Medical Disclaimer: This content is provided for general informational and educational purposes only and is not intended as, and should not be substituted for, professional nutritional, dietary, or medical advice. Individuals with tree nut allergies, egg allergies, dairy sensitivities, diabetes, or other dietary restrictions or health conditions should consult a qualified healthcare provider or registered dietitian before preparing or consuming this recipe. Sugar substitutes may cause digestive discomfort in some individuals when consumed in large amounts. Nutritional values will vary based on the specific sugar substitute, ingredients, and brands used. The creator of this content assumes no liability for any adverse effects resulting from the preparation or consumption of this recipe.
