Sausage and Egg Breakfast Casserole is the ultimate way to start your day right. This hearty dish, packed with flavors from savory sausage, colorful peppers, and a delicious blend of cheeses, provides a satisfying meal that feels comforting and indulgent. With its golden, bubbling top and soft, pillowy interior, it’s not just breakfast; it’s a delightful feast that brings your family together at the table.

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I first discovered this gem of a recipe during a sunny morning gathering with friends. We were searching for something hearty and cozy that wouldn’t take too much time in the kitchen. This casserole was a hit – it brought everyone together, and the leftovers made the most fabulous brunch for days to come. Trust me; once you try making it yourself, you’ll see how convenient and tasty this breakfast casserole can be.

Table of Contents

Why You’ll Love This Recipe
Ingredients You’ll Need
How to Make Sausage and Egg Breakfast Casserole
Storing & Reheating
Chef’s Helpful Tips
Recipe FAQs
Sausage and Egg Breakfast Casserole

Why You’ll Love This Recipe

Simple & Quick: Just 15 minutes of prep and it’s ready to bake!
Irresistible Flavor: The combination of sausage, peppers, and cheeses creates a rich, savory taste that’s hard to resist.
Eye-Catching Appeal: The colorful layers of peppers and the golden top make it a showstopper at any meal.
Flexible Serving: This dish is perfect for breakfast or brunch, but hearty enough to satisfy any mealtime craving.
Diet-Friendly Options: Easily customize it with your favorite veggies or substitute the sausage for a meatless option.

Ingredients You’ll Need

1 lb pork breakfast sausage: Juicy sausage brings a savory base flavor; brands like Jimmy Dean work great.
1 medium sweet onion: Adds a mild sweetness and depth; yellow onions can be used as a substitute.
1 medium red bell pepper: Brings a sweet, crunchy texture and a splash of color; green bell peppers are also acceptable.
1 medium green bell pepper or poblano pepper: Provides a slight kick; choose poblanos for a fuller flavor.
8 cups cubed French bread or brioche bread, day old, preferably: Stale bread absorbs the egg mixture well, creating a custardy interior.
2 cups frozen hash browns, thawed: Adds texture and heartiness; fresh shredded potatoes can also work well.
1 1/2 cups shredded sharp cheddar cheese: Adds a tangy, intense flavor; feel free to use mild cheddar if preferred.
1 1/2 cups shredded Monterey Jack cheese: Provides a creamy texture that complements the cheddar.
8 large eggs: Essential for binding everything together and creating a rich custard; room temperature eggs help set evenly.
2 cups whole milk: Makes it creamy; you can substitute with half-and-half for an extra luxurious touch.
1/2 cup heavy cream: Enhances the richness; can be omitted for a lighter version.
1 tsp seasoned salt: A delightful blend that enhances the flavors; regular salt could also suffice.
1 tsp black pepper: Adds a little heat; feel free to adjust according to your preference.
1 tsp garlic powder or granulated garlic: Provides depth of flavor.
1/2 tsp onion powder: For extra onion flavor without the texture.
1 tsp dry mustard (ground mustard): Adds a slight tang and enhances the overall flavor profile.
Fresh chives or fresh parsley for garnishing: Adds a pop of freshness and color for presentation.

How to Make Sausage and Egg Breakfast Casserole

Cook the Sausage: In a skillet over medium-high heat, cook 1 lb of pork breakfast sausage until browned and no pink remains. Drain excess fat from the pan and set aside.
Sauté the Vegetables: In the same pan, add 1 medium sweet onion, 1 diced medium red bell pepper, and 1 diced medium green bell pepper or poblano pepper. Cook until softened, scraping any browned bits from the bottom of the pan. Remove from heat.
Assemble the Casserole: Spray a 13×9-inch casserole dish with cooking spray. Spread 8 cups of cubed French bread evenly in the prepared dish. Scatter 2 cups of thawed hash browns over the bread.
Layer Ingredients: Top with the cooked sausage and sautéed vegetable mixture. Toss 1 1/2 cups shredded sharp cheddar cheese and 1 1/2 cups shredded Monterey Jack cheese together, then sprinkle half over all.
Prepare Egg Mixture: In a large bowl, whisk together 8 large eggs, 2 cups whole milk, 1/2 cup heavy cream, 1 tsp seasoned salt, 1 tsp black pepper, 1 tsp garlic powder, 1 tsp dry mustard, and 1/2 tsp onion powder until smooth.
Combine and Soak: Pour the egg mixture evenly over the casserole, gently pressing the bread and hash browns down to help them absorb the liquid. Let it sit for 15 minutes to allow some of the liquid to soak into the bread. Use the back of a spoon to gently press if needed. Sprinkle the top with the reserved cheese.
Chill Overnight: Cover with plastic wrap and chill overnight in the refrigerator. (You can bake immediately, but chilling allows better absorption.)
Bake: Preheat the oven to 350°F. Remove the casserole from the fridge and let it stand at room temperature for 10-15 minutes. Uncover and transfer the pan to the oven, baking for 50–60 minutes or until the center is set and the top is golden brown. Check at 45 minutes; if browning too quickly, cover with foil.
Rest and Serve: Let stand for 5-10 minutes, then slice and serve garnished with fresh chives or parsley.

Storing & Reheating

Store any leftovers in an airtight container at room temperature for up to 2 hours or in the refrigerator for up to 3-4 days. For longer storage, freeze portions in a freezer-safe container for up to 3 months. Reheat by baking in a 350°F oven for about 20 minutes or until heated through; cover with foil if needed to prevent over-browning. The texture may soften slightly after freezing, but you can refresh it by reheating with a sprinkle of fresh cheese.

Chef’s Helpful Tips

Avoid overly soggy bread by using day-old bread; it absorbs the egg mixture perfectly without becoming mushy.
Let your eggs and milk reach room temperature for better blending and even cooking—this promotes fluffy texture.
For a firmer casserole, reduce the amount of heavy cream or milk slightly.
This casserole can be made ahead of time, making it an ideal option for brunch parties or busy mornings.
Feel free to mix in cooked vegetables or your favorite herbs for added flavor.

Sausage and Egg Breakfast Casserole is more than just a meal; it’s a delightful gathering of friends and family around the table, where hearty flavors and warm memories are created. The beauty of this dish lies in its flexibility and adaptability – make it your own by adding some spice or vegetables that you love. So, roll up your sleeves and whip this up; your kitchen is about to smell fantastic, and your taste buds are in for a treat! Whether you serve it for a cozy weekend brunch or a special holiday gathering, this casserole is sure to impress.

Recipe FAQs

Can I use different types of bread for the casserole?

Absolutely! While French or brioche bread is recommended for its texture, feel free to use stale Italian bread, whole grain, or even bagels. Just ensure they are sturdy enough to hold up in the egg mixture.

How can I make this recipe vegetarian?

To create a vegetarian version, simply omit the sausage and replace it with sautéed mushrooms, spinach, or even a variety of your favorite vegetables. You could also add plant-based sausage for a similar flavor profile.

Can I prepare the casserole in advance?

Yes, this is one of the beautiful aspects of this dish! You can prepare it a day in advance, letting it sit in the refrigerator overnight. This allows the flavors to meld beautifully and makes for a hassle-free morning.

What can I serve with the casserole?

This casserole pairs wonderfully with fresh fruit, a light salad, or even a side of crispy bacon or turkey sausage. You can also serve it with a dollop of salsa or avocado for an added kick!

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