Heat oven to 375 degrees. Line a large baking sheet with parchment paper. Stir potatoes and egg yolks together in a medium bowl. In a small bowl, stir flour, baking powder, seasoned salt, and onion powder together. Stir into potato mixture. Divide into twelve mounds, 3-inches apart on parchment-lined baking sheet. Use a spoon to spread into 1/2-inch thick circles. Sprinkle tops lightly with bread crumbs, then spray with cooking spray. Bake for 20-30 minutes or until golden brown.