Breakfast Casserole Recipe

There’s something truly special about a dish that can turn a chaotic morning into a warm, satisfying pause.

This breakfast casserole, I have to tell you, is that kind of magic. It’s the one I turn to when I need a sure thing.

The Secret Weapon for Effortless Mornings

Honestly, for years I was loyal to a different overnight recipe, convinced it was the pinnacle of breakfast bakes.

Then, I tried this one. It was a humbling, and delicious, revelation. This is the traditional, hearty, egg-packed casserole I was always searching for.

It has this fantastic ability to feel both indulgent and completely straightforward, which is a rare balance to strike.

You still get that wonderful make-ahead grace, so your holiday or weekend morning is calm, but the texture is just superior.

Ingredients Needed for the Recipe

Gathering these simple ingredients is half the battle won. Here’s what you’ll need, and why each one matters.

• Pork Sausage (2 pounds): This is your flavor foundation, providing savory, spiced richness throughout every bite.
• Eggs (12): The main structure of the casserole, creating a tender and satisfying base that holds everything together.
• Sour Cream (1 cup): The secret to a luxuriously creamy and fluffy texture, preventing the eggs from becoming dry or rubbery.
• Milk (1/4 cup): Thins the egg mixture just enough for a perfect, cohesive pour and a lighter final result.
• Kosher Salt & Black Pepper: Essential seasonings that enhance all the other flavors, making them pop.
• Green Onions, Green & Red Bell Pepper: These add crucial pops of fresh color, a slight crunch, and a gentle, sweet vegetable note.
• Shredded Cheddar Cheese (2 cups): Brings pockets of gooey, melted goodness and a sharp, tangy finish that everyone loves.

Why This Recipe Truly Works?

The method here is smart, and it builds layers of flavor with minimal fuss. You start by building a creamy egg base.

Then, you cook the sausage and veggies in the same pan, letting the peppers and onions soak up all that savory sausage goodness.

Finally, everything gets combined and baked into one glorious, unified dish. It’s efficient cooking that delivers maximum taste.

And the adaptability is a huge bonus. The recipe is a fantastic template for your own creativity, which we’ll explore more later.

How to make Breakfast Casserole Recipe?

Follow these steps, and you’ll have a golden, puffed-up casserole ready to steal the breakfast show. It’s easier than it looks.

Step 1- Prep and Combine the Wet Base

Begin by preheating your oven to 350°F and generously greasing a 9×13 inch baking dish. Grab a very large bowl.

Crack in the dozen eggs, then add the sour cream, milk, shredded cheese, salt, and pepper. Use a hand mixer on low, just until it’s smoothly combined.

Step 2- Cook the Sausage

Place a large skillet over medium heat and add the two pounds of pork sausage. Let it cook, breaking it apart with a spoon as it browns.

You’re aiming for small, bite-sized crumbles. Once fully cooked, drain away most of the grease, and add the sausage to your bowl of egg mixture.

Step 3- Sauté the Vegetables

In that same skillet, with just a hint of the sausage flavor remaining, add your diced bell peppers and chopped green onions.

Sauté them for just a few minutes, until they begin to soften. This quick cook keeps their brightness. Stir them into the bowl with everything else.

Step 4- Mix and Assemble

Now, give the entire contents of the bowl a good, final stir. Make sure the sausage, peppers, and cheesy egg base are fully integrated.

Carefully pour this mixture into your waiting baking dish, using a spatula to scrape the bowl clean and spread it evenly.

Step 5- Bake to Perfection

Slide the dish into the preheated oven. Bake for 35 to 50 minutes. Ovens vary, so watch for the edges to be fully set and golden.

The very center should have a slight, gentle jiggle when you shake the pan. It will continue to set as it cools on the counter.

Make-Ahead Mastery and Storage

This casserole’s gift to you is its flexibility in timing. You can absolutely prepare it the night before, which is a game-changer.

Simply follow all the steps up to baking, cover the dish tightly, and refrigerate it. In the morning, let it sit out for 20 minutes while the oven heats, then bake.

For longer storage, you can freeze the unbaked casserole. Wrap it extremely well in plastic wrap and then foil, and freeze for up to 3 months.

Thaw it completely in the fridge overnight before baking. Leftovers keep beautifully for 3-4 days in the fridge, reheating wonderfully in the microwave.

Tips

A few little insights can take your casserole from great to absolutely perfect. Keep these in your back pocket.

• Don’t over-mix the egg base. Using the mixer on low speed and just until combined ensures a tender, not tough, texture.
• Let the casserole rest for about 10 minutes after baking. This makes it much easier to slice into clean, neat squares.
• If you’re using a glass baking dish, remember it retains heat differently; your bake time might be on the shorter end of the range.

Making It Your Own: Variations to Love

This recipe is wonderfully forgiving and eager to adapt to what you love or have on hand. Feel free to experiment boldly.

Try swapping the pork sausage for spicy chorizo, crumbled bacon, or even diced ham for a different savory profile. The cheese is also a great variable.

Pepper jack will add a kick, Swiss will bring a nutty tone, and Monterey Jack is always a mellow crowd-pleaser. Don’t stop there.

Consider stirring in a handful of fresh spinach, some sautéed mushrooms, or even grated zucchini for more veggie power. It’s your canvas.

Serving Ideas to Complete the Feast

This casserole is a hearty star all on its own, but a few simple accompaniments can turn it into a memorable brunch spread.

For a sweet contrast, serve it alongside a basket of warm cinnamon rolls or a platter of fresh, juicy fruit like berries and melon.

If you want to keep it savory, a simple arugula salad with a lemon vinaigrette cuts through the richness beautifully. And don’t forget the sauces.

A dollop of extra sour cream, a spoonful of salsa, or a drizzle of hot sauce on each slice lets everyone customize their plate just the way they like it.

Breakfast Casserole Recipe

This easy Breakfast Casserole recipe is made with eggs, sausage, bell peppers, onions, and cheese — baked into a fluffy, savory dish that’s perfect for holiday mornings or weekend brunches. You can prep it the night before, refrigerate, and bake in the morning for a hot, crowd-pleasing breakfast with minimal effort.

Author: leyaiscooking Cooking Method: Baking Cuisine: American Courses: Breakfast

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Prep Time 20 mins Cook Time 45 mins Rest Time 10 mins Total Time 1 hr 15 mins Difficulty: easy Cooking Temp: 177  C Servings: 12 Estimated Cost: $ 18 Calories: 420 Best Season: Winter, Spring, Fall

Ingredients

Scale

1/2x 1x 2x 3x

Main Ingredients

• 2 pounds pork sausage (mild or spicy, bulk or links (casings removed))
• 12 large eggs
• 1 cup sour cream (light or full-fat (240 g))
• ¹⁄₄ cup milk ((60 ml))
• 2 cups shredded cheddar cheese ((200 g); sub pepper jack or Swiss)
• 1 teaspoon kosher salt
• ¹⁄₂ teaspoon ground black pepper
• 4 green onions (thinly sliced)
• ¹⁄₂ green bell pepper (diced)
• ¹⁄₂ red bell pepper (diced)

Instructions

1. Preheat oven to 350°F (177°C). Grease a 9×13-inch baking dish with cooking spray.
2. In a large bowl, whisk together eggs, sour cream, milk, 1½ cups of the cheese (reserve ½ cup for topping), salt, and pepper until just combined. Do not overmix.
3. In a large skillet over medium heat, cook the sausage, breaking it into small crumbles with a wooden spoon, until browned and cooked through (5–7 minutes). Drain excess fat, reserving 1 tsp for veggies if desired.
4. Add diced bell peppers and green onions to the skillet (with or without a little sausage fat) and sauté 2–3 minutes until slightly softened. Let cool 2 minutes, then stir into the egg mixture.
5. Pour mixture into the prepared baking dish. Sprinkle the remaining ½ cup cheese evenly on top.
6. Bake for 35–50 minutes, or until edges are golden and set, and center is just slightly jiggly (it will firm up as it rests).
7. Let rest 10 minutes before slicing and serving.

Nutrition Facts

Servings 12

Serving Size 1 slice (1/12 casserole)

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Amount Per Serving

Calories 420kcal

% Daily Value *

Total Fat 30g47%

Saturated Fat 12g60%

Cholesterol 265mg89%

Sodium 890mg38%

Potassium 320mg10%

Total Carbohydrate 6g2%

Dietary Fiber 0.5g2%

Sugars 2g

Protein 28g57%

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Calcium 20 mg

Iron 15 mg

* Percent Daily Values are based on a 2,000 calorie diet. Your daily value may be higher or lower depending on your calorie needs.

Note

• Make Ahead Tip: Assemble the casserole (unbaked), cover tightly, and refrigerate up to 24 hours. Add 5–10 minutes to bake time if baking cold.
• Freezer-Friendly: Freeze unbaked (well-wrapped) for up to 3 months. Thaw overnight in fridge, then bring to room temp before baking.
• Variations: Swap sausage for cooked bacon or ham; add spinach, mushrooms, or zucchini. Try Swiss or pepper jack cheese for a twist.
• Storage: Leftovers keep refrigerated for 3–4 days. Reheat in microwave or 350°F oven until warmed through.

Keywords: breakfast casserole, egg casserole, sausage breakfast bake, make ahead breakfast, holiday brunch