clock clock iconcutlery cutlery iconflag flag iconfolder folder iconinstagram instagram iconpinterest pinterest iconfacebook facebook iconprint print iconsquares squares iconheart heart iconheart solid heart solid icon
A low carb keto lemon muffin recipe from Mellissa Sevigny of I Breathe Im Hungry

Keto Lemon Sour Cream Muffins – Low Carb

  • Author: Mellissa Sevigny
  • Yield: 8 to 12 servings 1x


Tender lemon cake, topped with crunchy streusel and a sweet tart lemon glaze! Keto, low carb, Atkins friendly, and gluten free to boot!



For the muffin:

  • 1/2 cup butter, softened
  • 3/4 cup granulated erythritol sweetener **
  • 3 large eggs
  • 3 Tbsp lemon juice
  • 1 Tbsp lemon zest
  • 1 1/2 cup superfine almond flour **
  • 1/2 cup coconut flour **
  • 2 tsp baking powder
  • 1/4 tsp xanthan gum or arrowroot powder
  • 1/2 tsp vanilla extract
  • 1 cup full fat sour cream
  • pinch of salt

For the streusel topping:

  • 3 Tbsp butter, melted
  • 3/4 cup superfine almond flour **
  • 3 Tbsp erythritol sweetener **
  • 1 tsp lemon zest
  • 1 Tbsp coconut flour

For the lemon glaze:

  • 1/2 cup confectioners style erythritol **
  • 3 Tbsp lemon juice


For the muffin layer:

  1. Combine all of the muffin ingredients in a blender and blend for 2-3 minutes or until smooth.
  2. The mixture is thick so you’ll have to stop a few times and scrape the sides down with a silicone spatula to get it going the first minute or so.
  3. Preheat the oven to 350 degrees (F) and then start your streusel topping.

For the streusel topping:

  1. Combine the melted butter, almond flour, sweetener, lemon zest and coconut flour in a small bowl and stir well with a fork until a crumbly dough forms.
  2. Spoon the muffin batter from the blender into 8 large or 12 regular muffin cups (if you’re using foil or thin paper then place inside a muffin tin to support them) – or into a small loaf or cake pan.
  3. Crumble the streusel topping in pea sized pieces over the top of the batter.
  4. Bake on the middle rack of your oven at 350 degrees for 35 minutes (large muffins) or 25 minutes (average sized muffin) or 50 minutes (loaf or cake pan) OR until a toothpick or knife inserted in the center comes out clean.

For the lemon glaze:

  1. Combine the erythritol and lemon juice in a cup or small bowl. Stir with a fork until smooth.
  2. If too runny, add another Tbsp of erythritol (or more) until an opaque but still pourable glaze forms.
  3. If too stiff to pour, add another tsp of lemon juice to loosen.
  4. Pour the glaze over the muffins after they are baked and slightly cool. Serve warm or room temperature.
  5. Store any leftovers covered in the refrigerator for up to a week.


** For best results, see what brands I use and recommend for my recipes over on the IBIH pantry recommendations page!

Approximate nutrition info is as follows:

1 average muffin (1/12th of recipe) or loaf slice contains:

290 calories, 25g fat, 4.5g net carbs, 8g protein

1 gargantuan (bakery sized) muffin or 1/8th of recipe contains:

435 calories, 37g fat, 7g net carbs, 12g protein

  • Category: Low Carb Muffin Recipe
  • Cuisine: American


  • Serving Size: 1 muffin
  • Calories: 290
  • Fat: 25g
  • Carbohydrates: 4.5g net
  • Protein: 8g

5 Tools to Achieve Keto Success 

How to get the results you want...easily!

free email bonus