Breakfast Casserole

Tested & Perfected Recipes Cookbook Recipe

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In need of a brunch dish that’s both delicious and easy? My breakfast casserole, brimming with sausage and Cheddar cheese, is your answer. Simply assemble it the night before and bake it to golden perfection in the morning!

Breakfast casserole in a baking dish.

If you’re on the lookout for a delicious yet stress-free brunch option, look no further than the classic breakfast casserole. This comforting dish combines traditional breakfast ingredients—eggs, meat, vegetables, cheese, and bread—baked in a single pan for ease. The best part? You can assemble it the night before and simply bake it the following morning, leaving you more time to spend with your guests.

This version, brimming with savory sausage and tangy sharp cheddar, delivers robust flavor, a crispy golden top, and a creamy center. The recipe was given to me by one of my oldest and closest friends, Kelly Santoro, who got it from her friend Corey, who got it from his mother, who originally found it in an old spiral-bound church cookbook. Such is the path of a great recipe!

“I’ve made this recipe a few times now and it’s quickly become my family’s go-to holiday or special event breakfast. So simple, so easy to prep, and so flavorful.”

Scott

What You’ll Need To Make The Breakfast Casserole

breakfast casserole ingredients
  • Sweet or spicy pork sausage: Acts as the main protein and flavor base of the casserole. Around the holidays, many grocery stores offer sausage in bulk style, eliminating the need to remove casings. If bulk sausage isn’t available, you can easily remove the meat from its casings by squeezing it out or snipping the casing with scissors and peeling it away.
  • Yellow onion: Provides a subtle sweetness and depth of flavor.
  • White sandwich bread: Serves as the structure of the casserole, absorbing the egg mixture and giving body and texture to the final dish.
  • Grated sharp cheddar cheese: Adds a rich, tangy flavor that complements the sausage, while also contributing to the casserole’s cheesy, creamy texture.
  • Fresh parsley: Offers a burst of color and fresh, herby flavor, brightening the overall taste.
  • Eggs: Bind the ingredients together, creating the custard-like base that solidifies when baked, giving the casserole its structure.
  • Half-and-half: Enhances the creaminess and richness of the egg mixture, contributing to the moist and tender texture of the casserole.
  • Jump to the printable recipe for precise measurements

Step-by-Step Instructions

Start by cutting the bread into cubes. Set aside.

bread cubes on cutting board

Melt 1 tablespoon of butter in a large nonstick skillet over medium-high heat. Add the sausage and cook, stirring with a wooden spoon to break the meat into small clumps, until browned, about 10 minutes.

browning the sausage

Transfer the sausage to a large mixing bowl, leaving the fat in the pan. Turn the heat down to medium, then add the onions to the pan along with 1 tablespoon of butter. Cook the onions, stirring constantly, until soft and translucent, about 5 minutes.

cooking the onions

Add the onions to the mixing bowl with the sausage, along with the bread cubes, grated cheese and parsley.

sausage and onions tossed in bowl with other breakfast casserole ingredients

Toss well, then spread the mixture evenly into the prepared baking pan.

bread, sausage, and onion mixture in baking dish

In a medium bowl, whisk together the eggs, half-and-half, salt and pepper.

eggs and half-and-half mixture in bowl

Pour the egg mixture evenly over the bread mixture.

pouring the egg mixture over the bread and sausage mixture

Cover tightly with saran wrap and refrigerate for at least a few hours or overnight.

covered breakfast casserole

Preheat the oven to 350°F. Bake for about one hour, uncovered, until puffed and golden brown. Serve immediately.
Breakfast casserole in a baking dish.

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Frequently Asked Question

Can the breakfast casserole be frozen before baking?

Yes, you can freeze the casserole before baking. Assemble the casserole according to the recipe, but don’t bake it. Cover it tightly with plastic wrap and then aluminum foil. It can be frozen for up to two months. When you’re ready to bake, thaw it in the refrigerator overnight, then bake as directed.

What is the best way to reheat the casserole?

The best way to reheat the breakfast casserole is in the oven. Preheat your oven to 350°F (175°C), cover the casserole with aluminum foil to prevent it from drying out, and heat for about 20 minutes, or until warmed through. For individual portions, a microwave can be used, heating in 30-second intervals until hot.

Can I make this breakfast casserole vegetarian?

I don’t recommend it, as turning this particular casserole into a vegetarian dish would require too many adjustments due to its reliance on sausage for flavor. However, for a fantastic vegetarian alternative, I recommend trying my Spinach and Cheese Strata (“strata” is just a fancy term for a breakfast casserole).

Can I replace the pork sausage with chicken or turkey sausage?

Absolutely! You can substitute pork sausage with either chicken or turkey sausage to suit your dietary preferences or for a lighter version of the casserole.

Video Tutorial

Breakfast Casserole

In need of a brunch dish that’s both delicious and easy? My breakfast casserole, brimming with sausage and Cheddar cheese, is your answer. Simply assemble it the night before and bake it to golden perfection in the morning!

Servings: 6 to 8
Cook Time: 1 Hour
Total Time: 1 Hour 30 Minutes

Ingredients

  • 2 tablespoons unsalted butter, divided
  • 1 pound sweet or spicy pork sausage (casings removed)
  • 1 medium yellow onion, chopped
  • 1 loaf (18 slices) white sandwich bread, such as Pepperidge Farm, crusts removed and cut into 1-inch cubes
  • 2½ cups grated sharp cheddar cheese
  • ½ cup chopped fresh parsley
  • 6 large eggs
  • 2 cups half-and-half
  • Scant teaspoon salt
  • ¼ teaspoon freshly ground black pepper

Instructions

  1. Grease a 9 x 13-inch baking dish with butter.
  2. In a large nonstick skillet, melt 1 tablespoon of the butter over medium-high heat. Add the sausage and cook, stirring with a wooden spoon to break the meat into small clumps, until browned, about 10 minutes. Transfer the sausage to a large mixing bowl, leaving the fat in the pan.
  3. Turn the heat down to medium, then add the onions to the pan along with the remaining 1 tablespoon of butter. Cook the onions, stirring constantly, until soft and translucent, about 5 minutes. Add the onions to the mixing bowl with the sausage, along with the bread cubes, grated cheese, and parsley. Toss well, then spread the mixture evenly into the prepared baking pan.
  4. In a medium bowl, whisk together the eggs, half-and-half, salt, and pepper.
  5. Pour the egg mixture evenly over the bread mixture. Cover tightly with plastic wrap and refrigerate for at least 2 hours or overnight.
  6. Preheat the oven to 350°F and set an oven rack in the middle position. Bake for about one hour, uncovered, until puffed and golden brown. Slice into squares and serve immediately.
  7. Note: The cook time is based on cooking the bread pudding directly out of the refrigerator. If it's left to sit out at room temperature before baking, check for doneness after 45 minutes.
  8. Freezer-Friendly Instructions: To freeze the casserole before baking, assemble it according to the recipe, but don't bake it. Cover it tightly with plastic wrap and then aluminum foil. It can be frozen for up to two months. When you're ready to bake, thaw it in the refrigerator overnight, then bake as directed.

Nutrition Information

Powered by Edamam

  • Per serving (8 servings)
  • Calories: 669
  • Fat: 44 g
  • Saturated fat: 20 g
  • Carbohydrates: 37 g
  • Sugar: 8 g
  • Fiber: 3 g
  • Protein: 32 g
  • Sodium: 1098 mg
  • Cholesterol: 251 mg

This website is written and produced for informational purposes only. I am not a certified nutritionist and the nutritional data on this site has not been evaluated or approved by a nutritionist or the Food and Drug Administration. Nutritional information is offered as a courtesy and should not be construed as a guarantee. The data is calculated through an online nutritional calculator, Edamam.com. Although I do my best to provide accurate nutritional information, these figures should be considered estimates only. Varying factors such as product types or brands purchased, natural fluctuations in fresh produce, and the way ingredients are processed change the effective nutritional information in any given recipe. Furthermore, different online calculators provide different results depending on their own nutrition fact sources and algorithms. To obtain the most accurate nutritional information in a given recipe, you should calculate the nutritional information with the actual ingredients used in your recipe, using your preferred nutrition calculator.

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Comments

  • Does this dish go directly from fridge to oven? Thank you

    • — Susan on April 3, 2023
    • Reply
    • Yep 🙂

      • — Jenn on April 3, 2023
      • Reply
  • About how many cups of cubed bread is this? Thanks.

    • — Leslie Case on April 2, 2023
    • Reply
    • Hi Leslie, I’ve never measured the bread once I’ve cubed it, but I suspect it should about be 10 – 12 cups. Hope you enjoy!

      • — Jenn on April 3, 2023
      • Reply
  • Hi Jenn
    I have a question about the amount of bread used in this recipe. You mentioned using 18 slices of bread but curious how many ounces the package weighs? The photo shows it already cut up.
    Thanks
    Chris

    • — Chris on April 2, 2023
    • Reply
    • Hi Chris, you’ll need 16 ounces of bread. Hope you enjoy the dish!

      • — Jenn on April 3, 2023
      • Reply
  • This recipe is in Jenn’s first cookbook listed as “Sausage & Cheddar Bread Pudding”

    • — Patti R on April 2, 2023
    • Reply
    • Hi I live in Canada we do not have pepperidge sandwich bread. Is there a substitute I can use. Thank you

      • — Janis Duval on July 27, 2023
      • Reply
      • Hi Janis, you really can use any kind of bread you like here. Hope you enjoy!

        • — Jenn on July 27, 2023
        • Reply
  • This is so comforting and delicious ! I made it with milk instead of half and half and it was perfect ! Thanks again.

    • — Taline on March 14, 2023
    • Reply
  • I made 2 batches of this, one as written and one dairy free. They both came out great!
    For the dairy free batch I subbed Oatly Barista Blend for the half and half and used Follow Your Heart Vegan Cheddar Shreds.
    I used a good crusty french loaf because that’s just what kind of bread I prefer and let everything sit overnight. It was perfect for the baby shower I hosted and made day of prep very easy.
    I really enjoyed it with some Tabasco, I thought it gave it a nice kick to break up the creaminess of the dish.

    • — Kal on March 2, 2023
    • Reply
  • Hi Jenn,
    I’d love to try this recipe. I only have parmigiano-reggiano and parmesan cheeses. Can I sub either one for cheddar cheese? Also, how many gram is 2 tbsp of butter?
    Many thanks.

    • — Katherine on January 23, 2023
    • Reply
    • Hi Katherine, I wouldn’t recommend those cheeses as they don’t melt nearly as well as cheddar — sorry! And 2 tablespoons of butter is the equivalent of 28 grams.

      • — Jenn on January 25, 2023
      • Reply
  • The simplicity of this recipe’s ingredients, made it an absolutely delicious breakfast for New Year’s morning. I almost steered clear of it because Italian sausage in a breakfast dish seemed unusual to me but it is actually what elevated this dish and we loved it. Thank you Jen for sharing it with us.

    • — Stephanie on January 2, 2023
    • Reply
  • Made this for New Years Day breakfast with the rest of an Italian bread (used the first half for croutons for your Caesar salad)….didn’t cut off the crusts, and it was excellent and so easy to pop in the oven. Highly recommend! Happy New Year Jenn!

    • — Raquel on January 1, 2023
    • Reply
  • I think this would have been really good but there is too much bread for the amount of egg mixture. Some of the bread rises above and gets hard. I would stick to about 10 slices of bread.

    • — Kevin M on December 27, 2022
    • Reply

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