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Keto Lemon Muffins - Bright, Zesty, and Low-Carb

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Prep Time 10 minutes
Cook Time 20 minutes
Total Time 30 minutes
Servings: 12 servings
Ingredients Method

Ingredients
  

  • Almond flour (fine blanched)
  • Coconut flour
  • Granulated keto sweetener (erythritol, allulose, or a blend)
  • Baking powder
  • Salt
  • Eggs (room temperature)
  • Unsalted butter (melted and slightly cooled) or avocado oil
  • Sour cream or full-fat Greek yogurt
  • Lemons (for zest and juice)
  • Vanilla extract
  • Lemon extract (optional, for extra zing)
  • Poppy seeds (optional)
  • Powdered keto sweetener (optional, for glaze)

Method
 

  1. Preheat and prep: Heat your oven to 350°F (175°C). Line a 12-cup muffin tin with paper liners or lightly grease it.
  2. Mix dry ingredients: In a large bowl, whisk 2 cups almond flour, 2 tablespoons coconut flour, 3/4 cup granulated keto sweetener, 2 teaspoons baking powder, and 1/4 teaspoon salt until well combined and lump-free.
  3. Combine wet ingredients: In a separate bowl, whisk 3 large eggs, 1/3 cup melted butter (or oil), 1/3 cup sour cream (or yogurt), 1 tablespoon finely grated lemon zest, 2 tablespoons fresh lemon juice, and 1 teaspoon vanilla. Add 1/4 teaspoon lemon extract if using.
  4. Bring it together: Pour the wet mixture into the dry ingredients. Stir gently until just combined. If using, fold in 1 tablespoon poppy seeds. The batter will be thicker than traditional muffin batter—this is normal.
  5. Fill the tin: Divide the batter evenly among the 12 muffin cups. Smooth the tops with the back of a spoon for even domes.
  6. Bake: Bake for 18–22 minutes, or until the tops are set and a toothpick comes out mostly clean with a few moist crumbs. Do not overbake—almond flour browns quickly.
  7. Cool: Let muffins cool in the pan for 10 minutes, then transfer to a rack to cool completely. They firm up as they cool.
  8. Optional glaze: Mix 1/2 cup powdered keto sweetener with 1–2 tablespoons lemon juice until smooth. Drizzle over cooled muffins. For a thinner glaze, add more lemon juice; for thicker, add more sweetener.