Make-Ahead Winter Breakfast Casserole Recipe
Winter Breakfast Casserole Recipe is an easy-to-prepare breakfast egg casserole, made with cheese, mushrooms, and breakfast meats!
Happy Friday, Friends! Enjoy this Make-Ahead Happy Holidays Winter Breakfast Casserole Recipe, if you love to be organized … starting now! I’m making my menus for the next few weeks with out-of-town guests coming, and a yummy breakfast casserole is on the menu for sure.
Winter Breakfast Casserole Recipe
We love a good hearty brunch dish, or breakfast casserole, like this Winter Breakfast Casserole Recipe. And the beauty of this recipe is you can use the veggies in your fridge or pantry!
Ingredients for Winter Breakfast Casserole
- Crustless hearty bread cubes
- Eggs
- Cream: use regular whipping cream or heavy cream
- Kosher salt and white pepper
- Sharp cheddar cheese
- Thinly sliced green onions
- Olive oil
- Breakfast meat: sausage, bacon, or salami (clean out your fridge!)
- Cemini mushrooms: or your favorite mushrooms
- Yellow onion
- Red pepper
Bacon Breakfast Casserole
Do you love a good fritatta recipe? For this Winter Breakfast Casserole Recipe, I basically followed a simple Frittata recipe and turned it into a breakfast casserole for the next morning.
It was perfect for serving on a cold winter’s morn.
Why I love breakfast casseroles
The beauty of breakfast casseroles is that you prepare them the day before and pull them out of the fridge the morning you are ready to bake.
We also love this time of year, this Baked Egg Nog French Toast Casserole, Stuffed Pear French Toast, and this Make-Ahead Breakfast Casserole that my Dad’s wife, Ginny makes (so good). Here’s the Ham Breakfast Casserole version (great with leftover holiday ham). Or try this Cheesy Breakfast Stuffing Cakes recipe.
I usually make 2, because they are excellent as leftovers.
Serve for a big crowd.
How do you make a breakfast casserole?
- Place bread on baking sheet and toast in oven. Let cool.
- Whisk eggs, cream, salt and pepper. Gently fold in the bread, cheese, and green onions. Set aside.
- In a large frying pan saute the mushrooms; set aside. Saute the onions and pepper; add in the cooked mushrooms and meats.
- Mix all ingredients together in a large bowl. Pour into 9×13 pan and cover with foil.
- Store in refrigerator overnight. Pull out 1 hour before serving.
- Bake and serve with sour cream and salsa.
Enjoy!

Get the Recipe:
Winter Breakfast Casserole Recipe
Ingredients
- 3 cups crustless hearty bread cubes, 1" cubes
- 10 eggs
- ¼ cup cream
- Kosher salt and white pepper, to taste
- 8 oz. sharp cheddar cheese, grated
- ½ cup thinly sliced green onions
- 4 Tbsp. olive oil
- 8-10 oz. sausage, bacon, or salami (clean out your fridge!)
- 8 oz. cremini mushrooms, sliced
- 1 yellow onion, thinly sliced
- 1 red pepper, thinly sliced
Instructions
- Preheat oven to 350. Place bread on baking sheet and toast in oven for 15 minutes. Let cool.
- Whisk eggs, cream, salt and pepper. Gently fold in the bread, cheese, and green onions. Set aside.
- In a large frying pan saute the mushrooms; set aside. Saute the onions and pepper; add in the cooked mushrooms and meats.
- Mix all ingredients together in a large bowl. Pour into 9x13 pan and cover with foil. Store in refrigerator overnight.
- Pull out 1 hour before serving. Bake at 350 for 30-40 minutes.
- Serve with sour cream and salsa.
How long does this last in the fridge after its been cooked?
I’d say 2-3 days, but whatever you are comfortable with for shelf-life of leftovers!