Spray a 9 X 13" pan with non-stick cooking spray. Melt butter and drizzle in the bottom of the pan. Layer the frozen has browns evenly to cover the bottom of the pan. Layer cheese, bacon and vegetables on top of the potates. Whisk eggs, milk, salt, pepper, and red pepper flakes. Pour egg mixture over the top to cover. Cover and refrigerate over night. Bake uncovered in a 350° oven for one hour or until set.