I immediately feel in love with this overnight sausage bake. This breakfast recipe is absolutely delicious, savory, and casserole dish for the perfect morning breakfast!

Overnight casseroles are beyond easy. If you love this recipe give my breakfast casserole with bacon is also fantastic.
I have made overnight breakfast casseroles before, but I love the few tweaks in hers - the croutons are the perfect bread to soak up all that eggy goodness, and the cream of mushroom soup adds so much flavor as a topping.
I absolutely love this savory casserole and will continue on in Mary's tradition of serving it to fabulous Sunday morning house guests.
If you try this, check my collection of the best kielbasa sausage recipes or chorizo recipes for any day of the week.

Overnight Breakfast Sausage Bake
Ingredients
- 1 ½ pounds sausage
- 2 ½ cups croutons
- 3 cups cheddar cheese - shredded
- 2 ¼ cups milk - separated
- 1 teaspoon dry mustard
- 4 eggs
- 1 can cream of mushroom soup - condensed
Instructions
- Brown and drain the sausage in a heavy bottomed skillet, then place in the bottom of a greased 9 x 13 baking dish.
- Sprinkle the croutons over the sausage.
- Beat together the eggs, 1 ½ cups of the milk and the powdered mustard, then pour this over the top.
- Add the shredded cheese, pack down a bit with your hands, then cover tightly and refrigerate overnight.
- Heat the oven to 350°F.
- Mix the cream of mushroom soup together with the remaining ¾ cup of milk and spread over the top of the casserole.
- Bake for 45 - 60 minutes, or until set. Allow to cool for about 10 minutes before serving.
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