Breakfast Casserole Sausage Cheddar

Featured in: Comfort Food Classics

This breakfast casserole layers cooked sausage, onions, and peppers over a bed of cubed bread, then bathes everything in a rich mixture of eggs, milk, and cheddar cheese. After baking until golden, it emerges puffed, cheesy, and full of flavor—ideal for feeding guests or preparing ahead for busy mornings. Simple swaps like turkey sausage or gluten-free bread accommodate different dietary needs. Serve warm, sliced, and enjoy a hearty start to your day with minimal fuss and maximum flavor.

Updated on Sat, 04 Oct 2025 11:24:49 GMT
Breakfast Casserole with Sausage and Cheddar Cheese baked golden, bubbling, and ready for serving family-style. Pin
Breakfast Casserole with Sausage and Cheddar Cheese baked golden, bubbling, and ready for serving family-style. | forkandbloom.com

This breakfast casserole is my answer to lazy Sunday mornings or whenever I want to feed a houseful of guests with something hearty and delicious It brings together savory sausage custardy eggs bubbling cheddar and chunks of bread for a make ahead meal that never lets me down

I first baked this on a snowy December morning when family poured in for breakfast and it disappeared before coffee was finished Now it is my go to make ahead brunch for busy holidays and weekend gatherings

Ingredients

  • Breakfast sausage: I love either pork or turkey sausage for heartiness and flavor Look for your favorite uncooked variety and check for minimal additives
  • Onion: Brings a sweet base to the casserole I go for a medium yellow onion chopped small for best browning
  • Red bell pepper: Adds a pop of color and mild sweetness Choose a firm pepper with glossy skin
  • Day old bread: White whole wheat or sourdough are all fair game Stale bread is crucial as it soaks up the egg custard without getting mushy
  • Sharp cheddar cheese: Melty and flavorful I prefer buying a block and shredding it fresh for taste
  • Whole milk: Delivers rich custard in the casserole Homogenized whole milk gives the best set though you can use two percent in a pinch
  • Large eggs: The beating heart of your casserole Choose the freshest eggs you can find
  • Salt and freshly ground black pepper: Bring all the flavors forward I never skip the black pepper
  • Garlic powder and dried thyme: A little garlic powder for warmth and optional thyme for herbal notes Both elevate the egg mixture and round out flavor
  • Butter or nonstick spray: For greasing the pan I always use unsalted butter for richness

Instructions

Preheat and Prepare the Dish:
Coat a nine by thirteen inch baking dish with unsalted butter or nonstick spray Make sure the bottom and sides are well covered to prevent sticking
Brown the Sausage:
Cook the sausage in a large skillet over medium heat Use a spoon to break up any large clumps Continue for about seven minutes until it is evenly browned Transfer the sausage to a plate lined with paper towels to drain excess fat
Sauté the Vegetables:
In the same skillet add chopped onion and diced red bell pepper Let them cook for about five minutes stirring occasionally until they soften and begin to caramelize This step builds a sweet savory base
Mix the Custard:
In a large mixing bowl combine the eggs and whole milk Whisk in salt freshly ground black pepper garlic powder and dried thyme Whisk thoroughly until everything is completely blended for the creamiest texture
Assemble the Casserole:
Evenly scatter bread cubes into the greased baking dish Top with cooked sausage followed by your sautéed vegetables Distribute one and a half cups of cheddar cheese over everything
Add the Egg Mixture:
Slowly pour the egg mixture over the bread and sausage in the baking dish Make sure all the bread cubes are moistened I gently press down with a spatula to help the bread soak up the egg mixture Finish by sprinkling the remaining cheese across the top
Chill for Maximum Flavor Optional:
If you have time cover the whole dish and refrigerate it overnight This allows the flavors to meld and the custard to fully absorb
Bake to Perfection:
Bake the casserole uncovered at three hundred fifty degrees Fahrenheit for forty to forty five minutes The casserole should be puffed golden and set in the center Let it cool for ten minutes before slicing so everything firms up beautifully
Hot Breakfast Casserole with Sausage and Cheddar Cheese, featuring fluffy eggs and melty cheese layers. Pin
Hot Breakfast Casserole with Sausage and Cheddar Cheese, featuring fluffy eggs and melty cheese layers. | forkandbloom.com

My favorite part is the crusty cheese topping where the bread caramelizes It reminds me of Christmas morning when my siblings would race for the golden corners and my mom would always sneak an extra helping while plates were still warm

Storage Tips

Let the casserole cool completely before storing Slice into portions and place in airtight containers Refrigerate for up to four days For longer storage wrap portions well and freeze up to two months I defrost overnight in the fridge then reheat at three hundred fifty degrees until warmed through

Ingredient Substitutions

Try turkey or chicken sausage for a lighter twist or use vegetarian sausage for a meat free version Any sturdy bread works though sourdough is especially tasty You can swap cheddar for Monterey Jack or even a pepper cheese for a gentle kick For those avoiding dairy substitute plant based cheese shreds and almond or oat milk

Serving Suggestions

Serve this casserole alone or plate it with sliced fruit honeyed yogurt or even a crisp green salad For a festive brunch I love a platter of roasted breakfast potatoes and a bright citrus salad on the side Add hot sauce or salsa for a little zing

Cultural and Historical Context

Breakfast casseroles like this one are rooted in American kitchens where home cooks found clever ways to use day old bread left from bakery runs Over decades they became staples for holidays potlucks and big family reunions Every region puts its own spin on the mix ins from spicy chorizo and jalapeño to classic country ham

Seasonal Adaptations

Add chopped asparagus and leeks in spring for a fresh twist Use sweet corn and green chile in summer months Fold in sautéed mushrooms or kale when fall comes around

Success Stories

Many friends have shared that their families now request this casserole for every holiday morning One busy mom told me she preps it in muffin tins for grab and go breakfasts and her picky toddler loves it warmed up after school It is a true crowd pleaser

Freezer Meal Conversion

After baking allow the casserole to cool then cut into squares and freeze on a sheet pan Once firm transfer to containers or freezer bags Thaw overnight in the fridge and reheat in the oven until bubbly It makes a fantastic grab and heat breakfast for busy weekdays

Close-up of sliced Breakfast Casserole with Sausage and Cheddar Cheese, showing savory sausage and crusty edges. Pin
Close-up of sliced Breakfast Casserole with Sausage and Cheddar Cheese, showing savory sausage and crusty edges. | forkandbloom.com

This casserole is a delicious and convenient option for busy mornings and entertaining guests It is customizable and can be enjoyed in various ways making it a versatile addition to any meal plan

Recipe Q&A

Can I prepare the casserole the night before?

Yes, assemble everything the night before, cover, and refrigerate. Bake the next morning as directed for best texture and flavor.

How do I make this gluten-free?

Substitute your favorite gluten-free bread for standard bread. Ensure all other ingredients are gluten-free as well.

Can turkey sausage be used instead of pork?

Absolutely! Turkey or chicken sausage work well for a lighter option and still deliver great taste.

What other vegetables can I add?

Spinach, mushrooms, or swapping bell peppers adds variety. Sauté any extra vegetables before assembling.

How do I store leftovers?

Cool completely, then refrigerate in an airtight container for up to 3 days. Reheat in the oven or microwave before serving.

Breakfast Casserole Sausage Cheddar

Savory sausage, eggs, and cheddar baked with bread for a crowd-pleasing, make-ahead breakfast favorite.

Prep duration
15 min
Cooking duration
45 min
Complete duration
60 min


Skill level Easy

Origin American

Yield 8 Portions

Dietary specifications None specified

Components

Meats

01 1 pound breakfast sausage (pork or turkey), casings removed

Aromatics and Vegetables

01 1 medium onion, finely chopped
02 1 red bell pepper, diced

Bread Base

01 6 cups day-old bread, cut into 1-inch cubes (white, whole wheat, or sourdough)

Dairy and Eggs

01 2 cups shredded sharp cheddar cheese
02 2 cups whole milk
03 8 large eggs

Seasonings

01 1 teaspoon salt
02 1/2 teaspoon freshly ground black pepper
03 1/4 teaspoon garlic powder
04 1/4 teaspoon dried thyme (optional)

For Greasing

01 1 tablespoon unsalted butter or nonstick spray

Directions

Step 01

Prepare Baking Dish and Preheat Oven: Preheat your oven to 350°F (175°C). Thoroughly grease a 9x13-inch baking dish with butter or nonstick spray.

Step 02

Brown the Sausage: In a large skillet over medium heat, cook the sausage, breaking it into crumbles with a spoon, until it is fully browned and cooked through, approximately 7 minutes. Transfer the cooked sausage to a plate lined with paper towels to drain excess fat.

Step 03

Sauté Vegetables: Using the same skillet, sauté the chopped onion and diced bell pepper until they soften, about 5 minutes. Remove the skillet from the heat.

Step 04

Whisk the Egg Mixture: In a large mixing bowl, vigorously whisk together the eggs, whole milk, salt, black pepper, garlic powder, and dried thyme (if using) until well combined.

Step 05

Assemble the Casserole Base: Evenly distribute the bread cubes in the prepared baking dish. Layer the cooked sausage and sautéed vegetables over the bread. Sprinkle 1 1/2 cups of the shredded cheddar cheese on top.

Step 06

Add the Custard and Top with Cheese: Pour the whisked egg mixture evenly over the entire casserole. Gently press down on the bread cubes to ensure they absorb the liquid. Distribute the remaining 1/2 cup of cheddar cheese over the top layer.

Step 07

Bake and Rest: Bake the casserole uncovered for 40–45 minutes, or until it is puffed, displays a golden-brown hue, and is set in the center. Allow the casserole to cool for 10 minutes before slicing and serving.

Necessary tools

  • 9x13-inch baking dish
  • Large skillet
  • Mixing bowls
  • Whisk
  • Knife
  • Cutting board

Allergy details

Review each ingredient for potential allergens and consult healthcare professionals if you're uncertain about anything.
  • Contains: Eggs, Milk (Dairy), Wheat (Gluten, present in standard bread).
  • Be advised that certain sausages may contain additional allergens; always verify ingredient labels.
  • For individuals requiring gluten-free or dairy-free options, ensure appropriate substitutions are made and meticulously check all ingredient labels.

Nutritional information (per portion)

These values are provided as estimates only and shouldn't replace professional medical guidance.
  • Calories: 390
  • Fat: 25 g
  • Carbs: 18 g
  • Protein: 22 g