Mix eggs, cottage cheese, low-fat quark, yoghurt and sweetener. Then add the protein powder, baking powder and flour and mix everything together. Finally stir in the blueberries.
Fill the dough into muffin molds and bake at 180 ° C in the lower part of the oven for 20-30 minutes. Makes 6 - 9 muffins.
Add sweetener depending on the sweetness. Should be roughly the same as 2 tablespoons of sugar.