Make Ahead Breakfast Casserole Recipe

Wake up to a delicious and stress-free holiday brunch with this make-ahead breakfast casserole! Packed with savory sausage, spinach, mushrooms, and cheesy goodness, this casserole is perfect for busy mornings. Prepare it the night before and simply bake it off for a crowd-pleasing breakfast that's sure to impress.

Prep Time 30 mins
Cook Time 70 mins
Calories 380.9 kcal
Protein 36g
Rating Be the first
Make Ahead Breakfast Casserole 24

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Forktionary editorial kitchen team

The Forktionary Kitchen Team

Adapted from Food.com, then tested & standardized by Forktionary.

Ingredients for Make Ahead Breakfast Casserole

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How to Make Make Ahead Breakfast Casserole

  1. Preheat oven to 350°F (175°C). Grease a 13x9 inch baking dish.
  2. Spread 2 cups of croutons evenly on the bottom of the prepared baking dish.
  3. Crumble 1 pound of cooked sausage over the croutons.
  4. In a large bowl, whisk together 6 large eggs, 1 cup of milk, 1 (10.75 ounce) can of condensed cream of mushroom soup, 5 ounces of fresh spinach (chopped), 8 ounces of sliced mushrooms, 1 cup of shredded cheddar cheese, 1/2 cup of shredded Monterey Jack cheese, and 1 tablespoon of Dijon mustard until well combined.
  5. Pour the egg mixture evenly over the sausage and croutons.
  6. Cover the baking dish with plastic wrap and refrigerate overnight (or for at least 4 hours).
  7. Preheat oven to 325°F (165°C).
  8. Bake the casserole for 50-55 minutes, or until the eggs are set and the top is lightly browned. Let stand for 10 minutes before serving.

Nutrition Information (Approximate per serving)

Sodium

39 g

Sugar

6g

Fat

59g

Carbs

4g

Frequently Asked Questions

How long does it take to make Make Ahead Breakfast Casserole?

Make Ahead Breakfast Casserole takes about 100 minutes from start to finish — roughly 30 minutes to prepare and 70 minutes to cook.

How many calories are in Make Ahead Breakfast Casserole?

Make Ahead Breakfast Casserole has approximately 380.9 calories per serving, with about 36 g protein, 4 g carbohydrates and 43 g fat.

What ingredients do I need for Make Ahead Breakfast Casserole?

The key ingredients for Make Ahead Breakfast Casserole are Seasoned Croutons, Sausage, Eggs, Milk, Cream Of Mushroom Soup, Frozen Chopped Spinach. See the full list with measurements above.

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