Savory Breakfast Egg Casserole Recipe to Start Your Day
Breakfast egg casserole recipe options have become a favorite solution for anyone who loves feeding a crowd without spending the morning tied to the stove.
This baked dish serves up comfort and satisfaction in every forkful, making it ideal for lazy weekend mornings, holiday gatherings, or meal prep sessions when you want something hearty waiting in the fridge.
You can customize it endlessly to suit different preferences, dietary needs, or whatever sounds good on any given day.
Leftovers reheat beautifully, so breakfast stays simple and delicious all week long.
Make one soon and see why so many people have added it to their regular rotation.
Why You’ll Love Breakfast Egg Casserole Ease
Full Ingredient Breakdown for Breakfast Egg Casserole
Main Proteins:Dairy Components:Vegetable Mix:Bread And Seasonings:Kitchen Tools for Breakfast Egg Casserole
Easy Steps For Breakfast Egg Casserole
Warm Up the Oven
Set your oven to exactly 350°F and grab a 9×13 inch baking dish. Grease the dish thoroughly with butter or cooking spray so nothing sticks.
Brown the Sausage
Grab a skillet and cook 1 cup of breakfast sausage over medium heat until it’s nicely browned. Break the meat into small crumbles as it cooks. Once done, transfer to a plate and set aside.
Prepare the Vegetables
In the same skillet, sauté your vegetables at medium heat:
Cook for 5-7 minutes until they soften. Then add 2 cups of chopped spinach and cook until the spinach wilts completely.
Create the Egg Base
Grab a large mixing bowl and whisk together:
Whisk until everything is smooth and well combined.
Combine All Ingredients
Fold into your egg mixture:
Stir gently until everything is evenly distributed.
Bake the Casserole
Pour the mixture into your prepared baking dish. Slide it into the 350°F oven and bake for 30-35 minutes. You’re looking for a golden top and a firm center.
Rest and Serve
Let the casserole sit for 5-10 minutes after removing from the oven. This helps it set up nicely. Cut into squares and serve while warm.
Best Tips For Breakfast Egg Casserole
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Breakfast Egg Casserole Common Queries
Can I prepare this casserole the night before?
Absolutely! Assemble the entire casserole, cover it tightly with plastic wrap, and refrigerate overnight. When ready to bake, remove from the refrigerator 30 minutes before cooking and then bake as directed.
What type of bread works best?
Slightly stale or day-old bread is perfect for this recipe. Sturdy breads like challah, French bread, or sourdough hold up well and absorb the egg mixture without becoming soggy.
How can I make this casserole vegetarian?
Replace the breakfast sausage with plant-based sausage crumbles or additional vegetables like mushrooms or zucchini. The cheese and eggs will still provide plenty of protein.
Is it possible to freeze this casserole?
Yes, you can freeze the baked casserole for up to 3 months. Wrap it tightly in aluminum foil and store in a freezer-safe container. Thaw overnight in the refrigerator and reheat in the oven.
Can I swap out the cheese?
Definitely! Swap cheddar for Swiss, pepper jack, or gouda. Each cheese will give the casserole a different flavor profile and make it feel like a new dish.
Breakfast Egg Casserole Recipe
- Total Time: 45-50 minutes
- Yield: 6 1x
Description
Breakfast Egg Casserole brings together hearty eggs, crispy bacon, and melted cheese for a morning meal that satisfies your hunger. Packed with flavor and simple to prepare, this dish will become your go-to weekend breakfast sensation.
Ingredients
Protein and Meat:
- 1 cup cooked and crumbled breakfast sausage
- 8 large eggs
Vegetables:
- 2 cups chopped spinach
- 1 cup diced bell peppers
- ½ cup diced onions
Base and Seasonings:
- 4 slices cubed bread
- 1 cup milk
- 1 cup shredded cheddar cheese
- 1 teaspoon salt
- ½ teaspoon pepper
Instructions
- Warm your oven to 350F and coat a 9×13 inch baking dish with cooking spray.
- Crumble 1 cup of breakfast sausage in a skillet, cooking until golden brown and fully cooked.
- Dice ½ cup onions and 1 cup bell peppers, sautéing in the same skillet for 5 minutes until softened.
- Add 2 cups chopped spinach to the skillet, cooking until leaves wilt and release moisture.
- Crack 8 large eggs into a spacious mixing bowl, whisking with 1 cup milk, 1 teaspoon salt, and ½ teaspoon pepper.
- Fold 4 sliced bread cubes, cooked sausage, sautéed vegetables, and 1 cup shredded cheddar into the egg mixture.
- Transfer the entire mixture to the prepared baking dish, spreading evenly with a spatula.
- Bake at 350F for 35 minutes, checking that the center sets and edges turn golden brown.
- Remove from oven and allow casserole to rest 10 minutes before slicing into generous squares.
Notes
- Swap sausage with turkey bacon or plant-based crumbles for a lighter protein option that still delivers great flavor.
- Prep vegetables and meat the night before to make morning assembly super quick and streamlined.
- For a gluten-free version, replace regular bread cubes with gluten-free bread or skip bread entirely and add extra veggies.
- Refrigerate any leftovers in an airtight container for up to three days, and reheat individual portions in the microwave for a fast breakfast.
- Prep Time: 10-15 minutes
- Cook Time: 35 minutes
- Category: Casseroles
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 6
- Calories: 360 kcal
- Sugar: 3 g
- Sodium: 720 mg
- Fat: 27 g
- Saturated Fat: 11 g
- Unsaturated Fat: 13 g
- Trans Fat: 0.5 g
- Carbohydrates: 14 g
- Fiber: 2 g
- Protein: 22 g
- Cholesterol: 280 mg

Daniel Navarro
Culinary Content Director
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Mexican-inspired Menus, Seasonal Restaurant Specials, Shared Plate Dining, Tequila Pairings, Chef-driven Recipes
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Daniel writes about bold flavors, chef-driven dishes, and the kind of restaurant moments that turn tacos, mezcal, and shared plates into a night worth repeating.