Sausage Croissant Breakfast Casserole - we love this easy overnight breakfast casserole! Only 6 ingredients! Sausage, croissants, cheddar cheese, eggs, half-and-half, and dry mustard. Assemble the night before and bake in the morning. Great for breakfast, brunch, lunch, dinner, and overnight guests. #casserole #breakfast #croissant #makeaheadcasserole
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