Brunch Casserole
["1 lb. sausage (bulk or chopped link sausage)", "1 lb. frozen hash brown potatoes", "1 lb. grated Cheddar cheese", "6 eggs", "2 1/2 c. milk", "1 Tbsp. dry mustard", "1 tsp. salt", "1 can cream of mushroom soup", "1/2 c. milk", "1 can sliced mushrooms (optional)"]
["Brown sausage and drain well.", "Spread in well-greased casserole the frozen potatoes.", "Layer sausage over potatoes.", "Add a layer of the cheese.", "Beat the eggs, 2 1/2 cups of milk and mustard with salt.", "Pour over cheese.", "Mix the soup and 1/2 cup of milk and sliced mushrooms.", "Layer over eggs.", "Cover and refrigerate 24 hours or just overnight.", "Bake at 350\u00b0 for 1 1/4 hours.", "Let set 10 to 15 minutes before serving."]
["sausage", "frozen hash brown potatoes", "Cheddar cheese", "eggs", "milk", "mustard", "salt", "cream of mushroom soup", "milk", "mushrooms"]