Sallie's Overnight Easy Breakfast Casserole

Sallie’s Overnight Easy Breakfast Casserole is the best breakfast casserole that I have ever tasted! Loaded with bacon, sausage, peppers, onions, and cheese, it’s got everything that you could possibly want in an egg dish — and you can make the entire meal in advance! It’s perfect for a holiday morning! My friend Sallie sent me the recipe a few months ago, and it’s a dish that she originally found in one of those great local community church cookbooks. She has adapted the recipe over the years, mixed and matched different ingredients, and she says that it comes out perfectly every time. Seriously, I think it would be hard to mess this one up! Since the base is a combination of eggs and Bisquick mix, it has this wonderful texture that’s kind of a like a cross between a crustless quiche and thicker, chewier bread (or dough). Again, it’s very hard to describe, but you can just trust me: it tastes ah-mazing. While I have yet to try it, Sallie assures me that the casserole freezes really well too. So if you want to save leftovers in individual Tupperware containers (like she does), or bake two separate smaller casseroles and save one for later (like she also does), you have that option. Either way, it’s tough to beat a hearty, easy breakfast casserole that you can prepare the night before and enjoy in the morning. It’s the perfect way to make the holidays special, and it works equally well on a “breakfast-for-dinner” evening. Add some toast, muffins, pastries, a green salad, or a fruit salad, and you’ve got a decadent, comforting, and simple meal that will bring everyone together around the table. What a perfect way to start (or end) the day!

NotesCooking for a Smaller Family? You can cut the ingredients in half and prepare the casserole in an 8-inch square baking dish. Alternatively, you can prepare the full recipe, but bake the ingredients in two separate 8-inch square casseroles. Eat one casserole now and save the other baked casserole in the freezer for later!

Have leftovers? The cooked casserole freezes really well!

Preparation Time20 min

Chilling Time8 min

Cooking Time45 min

Cooking Vessel Size9 x 13 Baking Pan