How many servings does this recipe make?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

What ingredients do I need for Overnight Breakfast/Brunch Casserole?

You need 10 ingredients. The key ingredients include: 2 tablespoons butter, 6 slices French bread, cut into 1/2 inch cubes, dried, 12 lb bacon, cooked and crumbled, 10 ounces frozen spinach, drained, and more.

Is Overnight Breakfast/Brunch Casserole suitable as breakfast?

Yes, Overnight Breakfast/Brunch Casserole falls under the Breakfast category and is a great choice for this type of meal.

How do I store leftover Overnight Breakfast/Brunch Casserole?

Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat gently before serving.

Overnight Breakfast/Brunch Casserole Recipe

Name: Overnight Breakfast/Brunch Casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 2 tablespoons butter; 6 slices French bread, cut into 1/2 inch cubes, dried; 12 lb bacon, cooked and crumbled; 10 ounces frozen spinach, drained; 12-¾ cup fresh mushrooms, sliced; 1 cup shredded cheese (i use cheddar, monterrey jack, or colby jack); 5 large eggs; 2 cups 2% low-fat milk; 1 teaspoon salt; 1 tablespoon mustard or 1 teaspoon dried mustard

Start your day right with this Overnight Breakfast/Brunch Casserole recipe. Made with butter, bread, bacon and frozen spinach. Easy step-by-step instruc…

This Overnight Breakfast/Brunch Casserole relies on simple, everyday ingredients such as butter, bacon, cooked and crumbled, frozen spinach, drained and fresh mushrooms, sliced. It comes together quickly and makes 4 servings, at about 7864 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.

It's an easy way to start the day, whether you're cooking a relaxed weekend breakfast or need something satisfying before a busy morning. Pair it with fresh fruit or your favorite hot drink to round out the meal.

Updated Jun 30, 2026

Serves 4 Breakfast

7864

kcal

Calories

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Taste as you go and adjust the seasoning before serving.
Avoid overcrowding the pan — cook in batches if needed for the best texture.
Let the dish rest for a few minutes before serving so the flavors settle.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Use a neutral oil or a plant-based spread in place of butter for a dairy-free version.

No specific allergen information. Please check the ingredient list for possible allergens.

My Personal Notes

Saved locally in your browser — visible only to you.

Overnight Breakfast/Brunch Casserole

Tips for the best results

Variations & substitutions

My Personal Notes

How did you like this recipe?

Frequently Asked Questions