How to Make Cheesy Breakfast Casserole
Step 1: Prepare the Baking Dish
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Preheat your oven to 350°F (175°C).
Lightly grease a 9×13-inch baking dish with butter or cooking spray to prevent sticking.
Step 2: Layer the Ingredients
Spread the bread cubes evenly across the bottom of the prepared baking dish.
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Sprinkle the cooked sausage, crumbled bacon, diced bell peppers, and half of the shredded cheese evenly over the bread.
Step 3: Prepare the Egg Mixture
In a large bowl, whisk together the eggs, milk, salt, and black pepper until smooth and fully combined.
Pour the egg mixture evenly over the bread and meat layers, allowing the bread to absorb the liquid.
Top with the remaining shredded cheese.
Step 4: Bake
Bake for 35 to 45 minutes, or until the eggs are fully set and the top is golden brown.
To check for doneness, insert a knife into the center. It should come out clean with no uncooked egg remaining.
Step 5: Garnish and Serve
Allow the casserole to rest for about 5 to 10 minutes before slicing.
Sprinkle with chopped green onions or fresh parsley for added color and flavor.
Serve warm with fresh fruit, hash browns, or a simple green salad.
Tips for the Best Breakfast Casserole
- Day-old bread works best because it absorbs the egg mixture without becoming overly soft.
- Cook the bacon and sausage completely before assembling the casserole.
- For extra flavor, use a combination of cheeses.
- Let the casserole rest before serving for cleaner slices.
Easy Variations
Customize your casserole with ingredients such as:
- Fresh spinach
- Mushrooms
- Diced onions
- Jalapeños
- Turkey sausage
- Ham
- Swiss cheese
- Pepper Jack cheese
Make-Ahead Instructions
This casserole is perfect for preparing in advance.
Simply assemble all the ingredients, cover tightly, and refrigerate overnight. When ready to bake, remove it from the refrigerator while the oven preheats, then bake as directed.
Storage and Reheating
Store leftovers in an airtight container in the refrigerator for up to four days.
Reheat individual portions in the microwave or warm the casserole in the oven until heated through.
You can also freeze portions for up to two months for a convenient make-ahead breakfast.
Frequently Asked Questions
Can I prepare this casserole the night before?
Yes. Preparing it ahead allows the bread to absorb the egg mixture, resulting in an even richer texture after baking.
What type of cheese works best?
Sharp cheddar is a popular choice, but mozzarella, Monterey Jack, Colby Jack, or a blend all work well.
Can I add vegetables?
Absolutely. Bell peppers, spinach, mushrooms, onions, and tomatoes are excellent additions that add color and flavor.
Final Thoughts
This Cheesy Bacon and Sausage Breakfast Casserole is the perfect combination of comfort and convenience. Packed with fluffy eggs, crispy bacon, savory sausage, melted cheese, and hearty bread, it’s a satisfying meal that’s ideal for breakfast, brunch, holiday mornings, or weekend family gatherings.
Simple to prepare, easy to customize, and great for making ahead, this classic breakfast casserole is a recipe you’ll want to enjoy again and again.
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