Fluffy Breakfast Egg Casserole with Sausage and Cheese Tips, FAQ & printable recipe

Tips for success

To achieve the ultimate fluffy texture, consider whisking the eggs with a hand mixer or in a blender for a minute before baking. This incorporates a significant amount of air, creating tiny pockets that expand during baking to produce an incredibly light and airy casserole.

Additionally, letting the whisked egg mixture sit for five minutes before pouring it over the ingredients allows the foam to settle slightly, ensuring a more uniform rise across the entire baking dish.

If you prefer a softer, more delicate custard texture, you can bake the casserole in a water bath, also known as a bain-marie. Place the glass baking dish inside a larger roasting pan and fill the roasting pan with hot water until it reaches halfway up the sides of the casserole dish.

The water insulates the eggs from direct heat, preventing them from overcooking and ensuring an incredibly smooth, velvety, and uniform texture from the edges all the way to the center.

Variations

• Spicy Jalapeño and Pepper Jack: Swap the cheddar for pepper jack cheese and add diced jalapeños along with the bell peppers for a spicy kick.
• Vegetarian Spinach and Feta: Omit the sausage and layer fresh baby spinach, sliced mushrooms, and crumbled feta cheese with the bell peppers.
• Bacon and Swiss: Replace the breakfast sausage with crispy chopped bacon and use shredded Swiss cheese instead of cheddar for a smoky flavor

Storage and make-ahead

Fridge

Store covered in the refrigerator for up to 3 to 4 days, ensuring it cools for no more than 2 hours first.

Freezer

Freeze individual slices wrapped in plastic wrap and placed in a freezer bag for up to 2 months.

Reheat

Reheat individual slices in the microwave for 1 to 2 minutes, or cover with foil and bake at 350°F (175°C) for 15 minutes.

Allow the baked casserole to cool completely at room temperature for no more than two hours before storing. Cover the baking dish tightly with plastic wrap or aluminum foil, or transfer individual slices to an airtight container. Store the casserole in the refrigerator for up to three to four days. For longer storage, slices can be wrapped individually in plastic wrap and stored in a heavy-duty freezer bag for up to two months.

This casserole is highly suitable for make-ahead preparation. You can assemble the entire dish, including browning the sausage, layering the vegetables, and pouring the egg mixture and cheese over the top, the night before.

Cover the assembled, unbaked casserole tightly with plastic wrap and store it in the refrigerator overnight. In the morning, remove the dish from the refrigerator and let it sit at room temperature for 30 minutes before baking as directed.

Serving ideas

Serve this casserole warm, sliced into generous squares. A metal spatula is the best tool for lifting the slices cleanly from the glass baking dish, showcasing the beautiful layers of savory sausage, colorful bell peppers, and fluffy eggs topped with a stretchy cheese pull. Garnish each serving with an extra sprinkle of fresh sliced scallions to enhance the visual appeal and add a bright, fresh flavor contrast.

This versatile dish pairs wonderfully with a variety of classic breakfast sides. Serve it alongside roasted breakfast potatoes, crispy hash browns, or a simple fresh fruit salad to create a complete and satisfying meal.

For a touch of heat, offer hot sauce, salsa, or sliced jalapeños on the side, allowing guests to customize their portions. It also complements sweet breakfast items like pancakes or French toast for a complete weekend brunch spread.

Frequently asked questions

Recipe card

Fluffy Breakfast Egg Casserole with Sausage and Cheese

Prep 15 minCook 45 minRest 10 minTotal 1 h 10 minServes 8

Ingredients

• 1 lb breakfast sausage, ground
• 1 cup diced bell peppers
• 8 large eggs
• 1 1/2 cups shredded cheddar cheese
• 1/4 cup sliced scallions

Instructions

1. Place a large skillet over medium-high heat. Add the ground breakfast sausage and cook, breaking it up with a spoon, until it is deeply browned and cooked through. The internal temperature of the sausage must reach 160°F (71°C) to ensure food safety. Drain any excess grease from the skillet.
2. Lightly grease a 9x13-inch glass baking dish. Spread the browned breakfast sausage evenly across the bottom of the dish. Scatter the diced bell peppers uniformly over the sausage layer.
3. In a large mixing bowl, crack the eggs. Whisk the mixture vigorously until the eggs are fully broken down, completely integrated, and slightly frothy on top.
4. Slowly pour the whisked egg mixture over the sausage and bell peppers in the baking dish, ensuring all ingredients are evenly submerged. Sprinkle the shredded cheddar cheese in an even layer across the top.
5. Place the baking dish in an oven preheated to 375°F (190°C). Bake for 35 to 40 minutes, or until the center is completely set and the cheese is melted, bubbling, and golden brown. To cook the eggs completely through, ensure the internal temperature reaches 160°F (71°C).
6. Remove the casserole from the oven and immediately sprinkle the sliced scallions over the hot cheese. Let the casserole rest for 10 minutes to allow the custard to set. Slice into squares using a metal spatula and serve warm.

Contains: eggs, milk

Food safety: This dish contains eggs that may not be fully cooked through if served soft. Use pasteurised eggs for pregnant women, young children, older adults, and anyone with a weakened immune system.

Estimated nutrition per serving

Calories

310

Protein

20 g

Carbohydrates

2 g

Fat

24 g

Fiber

0.5 g

Sugar

1.5 g

Sodium

650 mg

Automatic estimate from the ingredient list, not laboratory-verified.