Easy Breakfast Casserole

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.

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.