Place cottage cheese, honey, lemon juice, and vanilla extract in a high-speed blender or food processor and blend until completely smooth.
In a large mixing bowl, combine the ground oat flour, protein powder, and lemon zest.
Pour the blended cottage cheese mixture into the dry ingredients and stir until a thick dough forms.
Gently fold in the dried blueberries until evenly distributed.
Place the dough in the refrigerator for 30 minutes to firm up for easier handling.
Using a tablespoon or small scoop, portion the dough and roll into 12 uniform balls.
Store in an airtight container in the refrigerator for up to 5 days.