This Easy Breakfast Casserole is the ultimate crowd-pleasing morning dish. Made with fluffy eggs, savory beef sausage (pork-free), colorful bell peppers, and melty cheddar cheese, it comes together in minutes and bakes into a hearty, protein-packed breakfast. It’s perfect for Christmas morning, weekend brunch, or busy weekdays when you need something comforting and filling. Best of all, you can prep it ahead of time, making stress-free mornings totally possible.
table of contents
Time Breakdown
- Prep Time: 10 minutes
- Cook Time: 55 minutes
- Total Time: 1 hour 5 minutes
- Servings: 12
Ingredients List
- 2 pounds ground beef sausage (seasoned breakfast-style)
- 12 large eggs
- 1 cup sour cream (light or regular)
- ¼ cup milk
- 1 teaspoon kosher salt
- ½ teaspoon ground black pepper
- 4 green onions, sliced
- ½ green bell pepper, diced
- ½ red bell pepper, diced
- 2 cups shredded cheddar cheese
Kitchen Tools You’ll Need
This recipe doesn’t require fancy gadgets, just a few reliable kitchen basics to keep everything simple and stress-free.
- 9×13-inch baking dish
- Large mixing bowl
- Skillet
- Wooden spoon or meat chopper
- Measuring cups & spoons
Step-by-Step Beginner-Friendly Instructions
1️⃣ Preheat & Prep
Preheat oven to 350°F (175°C).
Spray a 9×13-inch baking dish with cooking spray.
2️⃣ Mix the Egg Base 🥚
In a large bowl, whisk together eggs, sour cream, milk, salt, pepper, and cheese until just combined.
Avoid overmixing — you want fluffy texture!
3️⃣ Cook the Beef Sausage 🍳
Heat a large skillet over medium heat.
Add beef sausage and cook until browned, breaking into small crumbles.
Drain excess grease.
Add cooked sausage to egg mixture.
4️⃣ Sauté the Veggies 🫑
In the same skillet, sauté bell peppers and green onions for 2–3 minutes until slightly softened.
Add to the egg mixture and stir gently.
5️⃣ Bake
Pour mixture into prepared dish.
Bake for 35–50 minutes, until edges are set and center is just slightly jiggly.
Let rest 5–10 minutes before slicing.
Pro Tips
- Make Ahead: Assemble night before, cover, refrigerate, and bake in morning.
- Freezer Friendly: Freeze baked casserole up to 2 months.
- Cheese Swap: Try Monterey Jack or Colby blend.
- Extra Flavor: Add spinach or mushrooms for variation.
Nutrition Table
| Serving Size | Calories | Protein | Carbs | Fat | Fiber | Sugar |
|---|---|---|---|---|---|---|
| 1 slice | 385 | 23g | 2g | 30g | 0g | 1g |
Disclaimer: Nutrition facts are estimated using online tools and may vary based on your ingredients and preparation. Please consult a nutritionist for precise dietary advice.
Easy Breakfast Casserole
Ingredients
Equipment
Method
- Preheat oven to 350°F (175°C) and grease a 9×13-inch baking dish.
- In a large skillet over medium heat, brown the beef sausage until fully cooked. Drain excess grease.
- In a large bowl, whisk together eggs, sour cream, milk, shredded cheddar, salt, and pepper until well combined.
- Stir in cooked sausage and diced bell peppers, then pour the mixture into the prepared baking dish.
- Bake for 35–50 minutes, or until the center is set and the top is lightly golden. Let rest before serving.
Nutrition
Notes
Tried this recipe?
Let us know how it was!Conclusion
This Easy Breakfast Casserole is comforting, protein-packed, and incredibly simple to make. Whether you’re hosting brunch or meal prepping for the week, it’s a dependable recipe that delivers every time.