Preheat & Prep: Preheat the oven to 350°F (175°C). Line a muffin tin with paper liners or lightly grease it.
Blend the Wet Ingredients: In a bowl, whisk together cottage cheese, egg, honey (or maple syrup), lemon juice, and vanilla extract until smooth.
Mix the Dry Ingredients: In a separate bowl, combine almond flour, baking powder, salt, and cinnamon (if using).
Combine Everything: Gradually fold the dry ingredients into the wet mixture until just combined. Gently stir in the blueberries.
Fill & Bake: Divide the batter evenly into the muffin cups. Bake for 20-25 minutes, or until a toothpick inserted in the center comes out clean.
Cool & Serve: Allow muffins to cool for 5-10 minutes before enjoying.