Line an 8x8 inch baking dish with parchment paper, or grease pan with oil or cooking spray

Mix oat flour, almond flour, protein powder, peanut butter, maple syrup and cream cheese together in large bowl until it forms a crumbly dough

Fold in milk and crumbled sandwich cookies until dough comes together

Press dough firmly into prepared pan

Cover with plastic wrap and refrigerate until firm, about 30 minutes

Cut into twelve bars

Keep refrigerated in an airtight container until ready to serve