Preheat oven to 350 degrees (F). Layer frozen hash browns in a 9 x 11-inch lasagna pan; season very well with salt and pepper. Layer green, yellow pepper and onions over hash browns; layer mushroom slices on top.
Cook bacon until crispy; place over mushroom layer. Beat eggs and milk and salt. Pour egg mixture over bacon; spread grated cheese on top. Bake at 350 degrees for 30 - 40 minutes.
Great breakfast casserole !
Mr Breakfast would like to thank MrsBuckeye for this recipe.