Sausage and egg breakfast casserole is a hearty dish that’s sure to please anyone at your breakfast table. With layers of savory sausage, fluffy eggs, and gooey cheese, it’s a comforting way to start the day. Imagine the warm, inviting aroma wafting through your kitchen as it bakes slowly in the oven — you simply can’t resist this dish! Perfect for a busy weekend or a relaxing holiday brunch, this casserole not only brings flavor but also convenience.

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I remember the first time I made this casserole; it was for a cozy family gathering. Everyone loved it and, truthfully, I couldn’t believe how easy it was to prepare. This dish is a crowd-pleaser that comes together with minimal effort and offers maximum satisfaction. Whether you’re expecting guests or just want to treat your family on a Sunday morning, this sausage and egg breakfast casserole is a fantastic choice. I can’t wait for you to try it!

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: With just 15 minutes of prep time, this dish is a breeze to make, and it cooks while you enjoy your coffee.
Irresistible Flavor: The combination of savory sausage, fresh veggies, and rich cheeses creates a flavor explosion.
Eye-Catching Appeal: This casserole bakes into a golden, bubbly masterpiece that’s perfect for any brunch table.
Flexible Serving: Great for breakfast, brunch, or even breakfast-for-dinner occasions — it fits any meal plan!
Diet-Friendly Options: Easily adaptable for gluten-free or vegetarian diets by swapping out specific ingredients.

Ingredients You’ll Need

1 lb pork breakfast sausage: The base of this dish, providing delicious fat and flavor. You can substitute with turkey sausage for a leaner option or even plant-based sausage for a vegetarian twist.
1 medium sweet onion, finely diced: Adds a wonderful sweetness and depth to the dish. A yellow onion can work in a pinch if that’s what you have.
1 medium red bell pepper, seeded and diced: Brings color and a mild sweetness. Feel free to use yellow or orange bell peppers for a different look.
1 medium green bell pepper or poblano pepper, seeded and diced: Offers a bit of zing. You can skip this if you prefer a milder flavor.
8 cups cubed French bread or brioche bread: Day-old bread works best as it soaks up the custard-like mixture without getting overly soggy.
2 cups frozen hash browns, thawed: Adds a nice texture and heartiness. You can also use fresh shredded potatoes if you prefer.
1 1/2 cups shredded sharp cheddar cheese: Melts beautifully and adds a nice sharp tang. You can substitute with mild cheddar for a mellower flavor.
1 1/2 cups shredded Monterey Jack cheese: This cheese adds a creamy element. If you can’t find it, a cojack or a mix of mozzarella and cheddar would do well.
8 large eggs: The main binding agent that holds everything together. Make sure your eggs are fresh for the best results!
2 cups whole milk: This creates a rich, custard-like consistency when baked. For a lighter version, you can use low-fat milk.
1/2 cup heavy cream: Enhances the richness of the dish; you can substitute half-and-half if desired.
1 tsp seasoned salt: This adds depth; however, you can replace it with your favorite seasoning mix.
1 tsp black pepper: For just the right hint of spice.
1 tsp garlic powder or granulated garlic: Offers a background hint of garlicky goodness; fresh minced garlic can be used too.
1/2 tsp onion powder: This rounds out the onion flavor beautifully.
1 tsp dry mustard (ground mustard): Adds a subtle tang; if you don’t have it, Dijon mustard can be used for a similar flavor.
Fresh chives or fresh parsley for garnishing: Adds a pop of color and freshness — feel free to skip this if you’re in a hurry.

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, breaking it apart with a spatula. Drain any excess fat from the pan and set aside.
Sauté the Vegetables: In the same pan, add the diced onion, red bell pepper, and green bell pepper. Cook until softened, scraping any browned bits from the bottom of the pan, and then remove from heat.
Assemble the Base: Spray a 13×9-inch casserole dish with cooking spray. Spread 8 cups of cubed French bread evenly across the bottom of the dish. Scatter 2 cups of thawed hash browns over the bread.
Layer with Sausage and Vegetables: Evenly top the bread and hash browns with the cooked sausage and sautéed vegetable mixture. Toss together 1 1/2 cups of shredded sharp cheddar and 1 1/2 cups of shredded Monterey Jack cheese, sprinkling half of this mixture all over the casserole.
Prepare the Egg Mixture: In a large bowl, whisk together 8 large eggs, 2 cups of whole milk, 1/2 cup of heavy cream, 1 tsp of seasoned salt, 1 tsp of black pepper, 1 tsp of garlic powder, 1 tsp of dry mustard, and 1/2 tsp of onion powder until smooth and well combined.
Pour Egg Mixture and Soak: Carefully pour the egg mixture evenly over the casserole, gently pressing the bread and hashbrowns down to help them absorb the liquid. Allow it to sit for 15 minutes; this helps the bread soak in the flavors. If any is poking out, press it down with the back of a spoon to submerge. Finish by sprinkling the remaining cheese on top.
Chill Overnight (Optional): Cover the casserole with plastic wrap and chill overnight in the refrigerator. If you’re short on time, you can bake it immediately, but letting it marinate overnight allows the bread to soak better.
Preheat Oven and Bake: On baking day, preheat your oven to 350°F. Remove the casserole from the refrigerator and let it stand at room temperature for about 10-15 minutes. Uncover and transfer the pan to the oven. Bake for 50-60 minutes, or until the center is set and the top is golden brown. Start checking around 45 minutes; if it’s browning too quickly, gently cover with foil.
Rest and Serve: After baking, let the casserole sit for about 5-10 minutes before slicing. Serve warm, garnished with fresh chives or parsley if desired.

Storing & Reheating

Store leftover casserole in an airtight container in the refrigerator for up to 5 days. If you have extra that you won’t consume right away, it can be frozen for up to 3 months. Reheat individual portions in the microwave for about 1-2 minutes or until warmed through. While it’s always delicious, keep in mind that a bit of the texture might change after freezing. To refresh, a quick stint in the oven for about 10 minutes at 350°F can help bring back some of that original charm.

Chef’s Helpful Tips

To avoid a soggy base, use day-old bread; fresh bread can soak up too much moisture.
Ensure all your ingredients are at room temperature before you start, especially the eggs and milk.
Timing is essential; be sure to let the casserole sit after pouring in the egg mixture, allowing it to soak properly.
If the casserole is browning too quickly, covering it with foil prevents it from burning while the middle cooks through.
Feel free to customize with your favorite veggies or meats; zucchini, mushrooms, or even ham are delightful alternatives!

Every gathering is bound to be better with this sausage and egg breakfast casserole on the table. Loaded with flavor, easy to prepare, and perfect for serving a crowd, this dish invites you to be creative and enjoy simple cooking at its best. Take your time to savor every layer of flavor you create, and do not hesitate to try out your personal touches. I’m sure everyone will be asking for seconds!

Recipe FAQs

Can I prepare the casserole the night before?

Absolutely! Preparing it the night before allows the ingredients to meld together and enhances the flavors. Just cover it well and store it in the refrigerator, then bake it in the morning for a fresh, hot breakfast.

What if I don’t have certain cheeses?

While sharp cheddar and Monterey Jack are great for this recipe, feel free to substitute with any cheese you have on hand. Mozzarella, gouda, or even pepper jack will add different layers of flavor and texture.

Can I make this dish vegetarian?

Yes, you can! Substitute the sausage with a plant-based option and leave out any animal products. You can add more vegetables like spinach, mushrooms, or zucchini to add substance and flavor.

How do I know when the casserole is done?

The casserole is done when the center is set and comments no longer jiggles. It should have a lovely golden brown top. Additionally, a toothpick inserted in the center will come out clean when it’s finished baking.

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