Start by preheating your oven to 400F and have a 12 cavity muffin pan ready.
Whisk together in a medium bowl, the flours, baking soda, and baking powder, just until combined. Set aside.
Use an immersion blender (or a regular blender), to blend the milk and cottage cheese until smooth. Set aside.
Combine the soft butter and brown sugar in a large bowl. Whisk them until creamed, and light in color. Whisk in the egg.
Add the lemon zest and the cottage cheese mixture to the batter and whisk to combine well.
Place the dry ingredients and the blueberries in the large bowl with the wet ingredients.
Use a spatula to gently for the dry and wet ingredients together. Mix until the dry ingredients have all been combined with the wet, being careful to not overmix.
Line your regular muffin pan with paper liner. If using a silicone muffin mold, you do not need the liners. Divide the batter equally in the 12 cavities.
Turn the oven temperature down to 375F and bake the muffins for 20 minutes, or until a toothpick inserted in the middle of a muffin comes out clean.
Let the Cottage Cheese Blueberry Muffins cool down completely and enjoy.