Pre-heat oven to 180°C
Mix the flour, hazelnut meal, baking powder and salt into a mixing bowl. Cream the sugars and butter together in a standing mixer or with beaters. Add the milk and vanilla extract. Mix the wet ingredients into the dry. Form into balls and press one or two pieces of chopped hazelnut protein bars into each cookie.
Bake at 180°C for 16-18 minutes. Let cool and enjoy!