Overnight Breakfast Casserole Recipe

Introduction

This Overnight Breakfast Casserole is a simple and satisfying way to start your day. By preparing it the night before, you save time in the morning while enjoying a warm, flavorful meal packed with eggs, vegetables, and cheese.

Ingredients

• 6 large eggs
• 1 cup milk
• 4 cups bread, cubed
• 1 to 2 cups mixed vegetables (such as bell peppers, onions, and spinach)
• 1 to 1½ cups shredded cheese (cheddar or your favorite)

Instructions

1. Step 1: In a large bowl, whisk together the eggs and milk until well combined.
2. Step 2: Grease a baking dish and spread the cubed bread evenly over the bottom.
3. Step 3: Sprinkle the mixed vegetables and cheese evenly over the bread.
4. Step 4: Pour the egg and milk mixture over the ingredients in the dish, pressing lightly to soak the bread.
5. Step 5: Cover the dish with plastic wrap or foil and refrigerate overnight.
6. Step 6: In the morning, preheat your oven to 350°F (175°C) and bake the casserole uncovered for 45–50 minutes, until the eggs are set and the top is golden.
7. Step 7: Let it cool slightly before serving. Enjoy your hearty breakfast!

Tips & Variations

• Use day-old bread for better texture as it absorbs the custard without becoming soggy.
• Try adding cooked sausage or bacon for extra protein and flavor.
• Swap the milk for half-and-half or cream for a richer casserole.
• Include herbs like chives or parsley for a fresh flavor boost.

Storage

Store leftover casserole covered in the refrigerator for up to 3 days. Reheat individual portions in the microwave or warm in the oven until heated through.

How to Serve

Serve this delicious recipe with your favorite sides.

FAQs

Can I prepare this casserole without vegetables?

Yes, you can omit the vegetables or substitute them with your preferred fillings, such as cooked meats or different cheeses.

How long can the casserole sit in the fridge before baking?

It’s best to bake the casserole within 24 hours of assembling to ensure freshness and optimal texture.

Overnight Breakfast Casserole Recipe

Print Recipe

★★★★★

4.5 from 131 reviews

This Overnight Breakfast Casserole is a simple and delicious make-ahead dish perfect for busy mornings. It features layers of crunchy bread, fresh vegetables, eggs, milk, and melted cheese baked to golden perfection. Prepare it the night before, refrigerate, and enjoy a warm, hearty breakfast without the morning rush.

• Author: Mick
• Prep Time: 15 minutes
• Cook Time: 50 minutes
• Total Time: 8 hours 65 minutes
• Yield: 8 servings 1x
• Category: Breakfast
• Method: Baking
• Cuisine: American
• Diet: Vegetarian

Ingredients

Scale 1x2x3x

Egg Mixture

• 8 large eggs
• 2 cups milk
• Salt, to taste
• Black pepper, to taste

Bread

• 6 cups cubed day-old bread (French or white bread works well)

Vegetables

• 1 cup diced bell peppers
• 1 cup chopped spinach or kale
• 1/2 cup diced onions
• 1/2 cup sliced mushrooms (optional)

Cheese

• 2 cups shredded cheddar cheese

Instructions

1. Prepare the bread and vegetables: Cube day-old bread into bite-sized pieces. Chop and dice your vegetables as desired.
2. Assemble the casserole: In a greased 9×13-inch baking dish, layer the bread cubes, evenly distribute the chopped vegetables, and sprinkle the shredded cheese on top.
3. Mix the egg mixture: In a large bowl, whisk together the eggs, milk, salt, and black pepper until fully combined.
4. Pour egg mixture: Pour the egg and milk mixture evenly over the layered bread, vegetables, and cheese, ensuring all bread pieces are soaked.
5. Refrigerate overnight: Cover the casserole dish tightly with plastic wrap or aluminum foil and refrigerate for at least 8 hours or overnight. This allows the bread to soak up the egg mixture thoroughly.
6. Bake in the morning: Preheat your oven to 350°F (175°C). Remove the cover and bake the casserole for 45-55 minutes, or until the top is golden brown and the center is set. A knife inserted in the middle should come out clean.
7. Serve: Let the casserole sit for 5 minutes before slicing. Serve warm and enjoy your hassle-free, nutritious breakfast.

Notes

• You can customize the vegetables based on what you have, such as adding tomatoes, zucchini, or broccoli.
• Use whole grain bread for a healthier option.
• For extra flavor, add cooked sausage, bacon, or ham.
• This casserole can be prepared ahead and also freezes well for future breakfasts.
• If you prefer a dairy-free version, substitute milk and cheese with plant-based alternatives.

Keywords: overnight casserole, breakfast casserole, make ahead breakfast, baked eggs, vegetable breakfast bake