These delightful blueberry muffins are fluffy and low in carbs, making them a great fit for your keto diet. They take only thirty minutes to prepare and double as an excellent breakfast or snack.
Jump to Recipe Print RecipeThese treats taste better with every bite you take and they contain only 3.7g net carbs which makes them light and suitable for circling the keto carb threshold.
Keto Blueberry Muffins – Introduction
The comment section speaks high about how impressive this recipe is. One of the fans named Cindy commented: “This is the best muffin recipe! My go to every week. My non-keto family members devour them.”
Why You’ll Love These Muffins
Fresh, Fruity Flavor with a Light Texture
The tangy flavor of sour cream paired with blueberries combined with lemon adds depth along with a burst of berry filled brightness. It also helps increase the rise, therefore creating lighter muffins.
The Power of Simplicity
Sometimes, less truly is more. After three trials, I discovered that removing butter made a noticeable difference. It lightened the texture, preventing the dense, cakey outcome butter can create.
These keto-friendly muffins need just five minutes of prep time and one bowl to prepare. They’re free from gluten and packed full of nutrients, making them the ideal breakfast boost.
Ingredients Overview
Dry Ingredients
Almond Flour: I used ground almonds, which is the same as almond flour. If using superfine almond flour, its liquid absorption capability necessitates reducing the amount slightly.
Almond meal yields darker muffins while blanched almond flour will lighten the result.
Sweetener: Choose your preferred low carb sweetener erythritol, allulose, xylitol monk fruit or Bocha Sweet; I used granulated erythritol.
Baking Powder: As with any other recipe that calls for it, baking powder helps ensure a modest rise.
Wet Ingredients
Eggs: Best to use 3 large or 4 medium eggs that are closer to room temperature as they help make muffins aerated and fluffy.
Sour Cream: For best results should be at room temperature.
Lemon: Requires zest and juice. Always better to choose unwaxed lemons.
Extract of Vanilla: Sugar free variants available in the market should be used.
Blueberries: Either fresh or frozen blueberries work for this recipe though never thawed as they turn soggy.

Step-by-Step Instruction
Step 1: Whip the Eggs
In a large bowl incorporate air by beating eggs using electric mixer/food processor until frothy and expanded. Light airy muffins have an incorporated air crumb structure that makes them lighter.
Step 2: Add Wet Flavorings
Add sour cream, extract of vanilla, lemon zest along with juice into smooth slurry mixture then blend ensuring thorough combination
Step 3: Add Dry Ingredients
Include almond flour, sweetener, and baking powder into the mix. Blend further until smooth thick batter forms.
Step 4: Fill Up Your Muffin Pan
Remember, spoon the batter into either a greased silicon mold or a muffin tray lined with paper cups. Do not fill it to the brim and make sure there is some space left for rising.
Step 5: Blueberry Addition
Make sure you push down some blueberries into the mixture and make place for one on top of each muffin as well.
Step 6: Baking Procedure
Bake the muffins at around 350 degrees Fahrenheit for thirty-five minutes. Ensure that it is golden in color and clean when checked with a toothpick.
Makes: Eight large muffins that can be stretched to nine for smaller portions.
Perfect Muffin Tips:
Taste Before Baking: sweetness can be adjusted. As far as i goes, I prefer mine not too sweet.
Prevent Sinking Berries: Sinking berries can be prevented by pressing the blueberries into the cups instead of mixing them.
To avoid color bleeding: from frozen berries, use almond flour to coat them.
Don’t Overfill: Avoid overflow by not overfilling your batter. Always leave some space at the top.
Variations
- Add 1 tablespoon of grated orange zest for a citrus twist.
- Sprinkle a bit of granulated sweetener on top before baking for a hint of crunch.
- Swap in other berries raspberries, cranberries, blackberries, or chopped strawberries all work well.
- Want something richer? Add sugar-free chocolate chips or chopped nuts—just skip the lemon to balance flavors.
Substitution Options
No Sour Cream?
Use Greek yogurt and add 2 tablespoons of butter to retain fat content. Cream cheese also works well.
Dairy-Free Option
Choose coconut yogurt instead of sour cream for a light, dairy-free version. Replace any butter with coconut oil.
Serving Suggestions
These muffins are ideal for breakfast or as an on-the-go snack. Pair them with a hot coffee, tea, or a matcha latte. They’re also delightful spread with blueberry cream cheese.
Pack one in your bag, your child’s lunchbox, or enjoy it warm at home—these muffins are versatile and satisfying.
Storage Instructions
Room Temperature: Cool completely before storing in an airtight container. Good for up to 2 days.
Refrigerator: Will keep fresh for up to 5 days when stored in the fridge.
Freezer: Freeze for up to 3 months. Make a double batch and thaw as needed.
To Reheat: Defrost overnight and warm in the microwave for 20 seconds before enjoying.
Frequently Asked Questions
1. Is it possible to make the recipe more decadent by adding butter?
That is not recommended. Additional fat will change the texture, weighing down the muffins and making them less fluffy.
2. Can I use coconut flour in place of almond flour?
That will not work. Coconut flour works very differently and absorbs more liquid which means additional eggs must be added. This recipe uses three eggs and won’t work with a substitution. If you’re determined to use coconut flour, look for a recipe specifically designed for that.
3. What’s a good nut-free alternative to almond flour?
You can try equal parts sunflower seed flour and sesame seed flour as an option.
Fluffy Low-Carb Blueberry Muffins
Course: BreakfastCuisine: BritishDifficulty: Easy8
servings5
minutes25
minutes231
kcalThese keto blueberry muffins are delightfully delicious and come together in just 30 minutes. They’re soft, moist and filled with juicy blueberry bursts.
Ingredients
2 cup almond flour or ground almonds. 200g.
½ cup sour cream room temperature, 120g
4 eggs large
2 tablespoon lemon juice
⅓ cup granulated erythritol or to taste, 60g
lemon zest, grated from 1 lemon
2 teaspoon vanilla extract
1 ½ teaspoon baking powder
½ cup blueberries fresh or frozen, 70g
Directions
- Preheat your oven to 180°C (350°F).
- Whisk the eggs for a few minutes until frothy and doubled in volume.
- Add sour cream, lemon juice, lemon zest and vanilla extract and mix well.
- Incorporate almond flour, baking powder and your preferred low-carb sweetener. Mix until smooth.
- Divide the batter evenly into 8 paper muffin liners or a silicone tray.
- Gently fold in the blueberries pressing a few into the batter and placing some on top.
- Bake for 25 minutes or until the tops are lightly golden.
Notes
- Yields 8 muffins, each weighing about 70g with just 3.7g net carbs.
- Store muffins at room temperature for up to 2 days, in the fridge for 5 days or freeze for up to 3 months.
Nutrition Facts
8 servings per container
- Amount Per ServingCalories231
- % Daily Value *
- Total Fat
18.5g
29%
- Saturated Fat 3.1g 16%
- Total Carbohydrate
58g
20%
- Dietary Fiber 2.1g 9%
- Sugars 1.7g
- Protein 8.1g 17%
* The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.