Cheesy Sausage Breakfast Casserole Recipe tastes rich and cheesy, with savory sausage, soft custardy eggs, and golden edges that crunch a little. It suits busy mornings, holiday brunch, or feeding a crowd, and it takes about 1 hour from start to finish. I ate a test slice at 9 p.m., and I regret nothing.
Why Choose This Cheesy Sausage Breakfast Casserole Recipe
Cheesy Sausage Breakfast Casserole Recipe uses simple pantry staples and one skillet plus one baking dish. You whisk the egg mixture, layer bread, sausage, and cheese, then bake. No tricky steps and no fancy tools.
You can assemble it the night before or right before baking. That flexibility saves stress on brunch day. The casserole holds well, so you can feed people in waves without drama.
Ingredients You Need
- 1 pound pork breakfast sausage, casings removed
- Mild or hot both work; I like Jimmy Dean or your favorite local brand. Use turkey sausage for a lighter option.
- 1 tablespoon butter or olive oil
- 1 small yellow onion, diced
- 1 red bell pepper, diced
- 8 large eggs
- 2 cups whole milk
- Or 1.5 cups milk plus 1/2 cup half-and-half for extra richness. Use lactose-free milk if needed.
- 1 teaspoon Dijon mustard
- It boosts flavor without tasting like mustard; skip it if you prefer.
- 1 teaspoon kosher salt
- If your sausage runs salty, start with 3/4 teaspoon and adjust.
- 1/2 teaspoon black pepper
- 1/2 teaspoon garlic powder
- 1/4 teaspoon smoked paprika
- 6 cups day-old bread cubes, 1-inch
- French bread or sourdough holds up best. Swap in 4 cups thawed shredded hash browns if you want a potato base.
- 2 cups shredded sharp cheddar, about 8 ounces
- Pre-shredded saves time; blocks melt creamier.
- 1/2 cup shredded mozzarella or Monterey Jack
- 2 tablespoons chopped scallions or parsley for garnish
Pantry shortcuts and swaps:
- Use frozen onion and pepper mix to save chopping.
- Stir in a small can of diced green chiles for a mild kick.
- Hot sauce and salsa taste great on the table.
Equipment:
- 9×13-inch baking dish, lightly greased
- Large skillet
- Large mixing bowl, whisk, and spatula
- Foil for covering while baking if the top browns too fast
How to Make Cheesy Sausage Breakfast Casserole
- Prep Time 15 minutes
- Cook Time 45 minutes
- Total Time 1 hour
- Heat the oven to 350°F and grease a 9×13 baking dish. Cut the bread into 1-inch cubes and set it aside. Whisk eggs, milk, Dijon, salt, pepper, garlic powder, and smoked paprika in a large bowl until smooth.
- Brown the sausage in a large skillet over medium heat, about 7 minutes. Break it into crumbles as it cooks, and drain excess fat if it looks greasy. Add onion and bell pepper to the skillet and sauté until tender, 4 to 5 minutes.
- Layer half the bread in the baking dish. Scatter half the sausage and veggies over the bread, then sprinkle half the cheddar. Repeat with the remaining bread, sausage mixture, and cheddar, then top with the mozzarella.
- Pour the egg mixture evenly over the casserole. Press down gently with the spatula so the bread soaks up the custard. Let it stand 10 minutes so the liquid can absorb, or cover and chill up to 12 hours for an overnight breakfast casserole.
- Bake uncovered for 40 to 45 minutes until the center feels set and the top turns golden. If the top browns too quickly, tent with foil. Let it rest 10 minutes, then garnish with scallions or parsley and slice.
Tips & Common Mistakes
- Drain excess sausage fat so the casserole stays rich, not greasy.
- Use sturdy, slightly dry bread to prevent a soggy center.
- Press the layers before baking so the custard distributes evenly.
- Taste a sausage crumble and adjust salt in the egg mix; sausage saltiness varies.
- Do not overbake; pull it when the center feels just set and no liquid pools.
- Cool 10 minutes before slicing so clean squares hold their shape.
- If you swap in hash browns, thaw and pat them dry so they crisp and do not water down the custard.
- Shred cheese from a block for the best melt; pre-shredded works in a pinch.
Variations I’ve Tried
- Spicy: Hot Italian sausage, pepper jack, and a pinch of crushed red pepper.
- Southwest: Chorizo, cheddar, canned green chiles, and a spoon of salsa on each slice.
- Veggie lovers: Mushrooms, spinach, and zucchini with feta and mozzarella.
- Lighter: Turkey sausage, reduced-fat cheddar, and 1 percent milk.
- Gluten free: Use your favorite gluten-free bread or a hash brown base.
- Caprese twist: Italian sausage, mozzarella, halved cherry tomatoes, and torn basil after baking.
How to Serve Cheesy Sausage Breakfast Casserole
Serve warm squares with salsa, hot sauce, or a drizzle of maple syrup if you like sweet-salty. Pair it with fresh fruit, a simple arugula salad, or crispy breakfast potatoes. Coffee, cold brew, or orange juice all play well with this cheesy breakfast bake. I also pack leftovers in lunchboxes with carrot sticks and ranch.
Make-Ahead and Storage
- Make ahead: Assemble, cover, and chill up to 12 hours. Bake straight from the fridge and add 5 minutes if needed.
- Fridge: Cool, cover, and refrigerate for up to 4 days. Reheat slices in a 325°F oven for 15 to 20 minutes, covered, or microwave 60 to 90 seconds.
- Freezer: Wrap slices tightly and freeze for up to 3 months. Reheat from frozen at 350°F for 30 to 40 minutes, or thaw overnight and heat until hot.
Nutrition Information
- Serving size: 1 of 12 slices
- Approximate per serving: 360 to 420 calories, 22 to 25 g protein, 23 to 27 g fat, 20 to 26 g carbs, 1 to 2 g fiber, 650 to 800 mg sodium
- These numbers vary based on sausage, bread, and cheese brands.
Cheesy Sausage Breakfast Casserole Recipe
A hearty and delicious breakfast casserole filled with sausage, cheese, and eggs.
Ingredients
Instructions
- Preheat oven to 350°F (175°C).
- Cook sausage in a skillet over medium heat until browned. Drain excess grease.
- In a large bowl, whisk together eggs, milk, salt, and pepper.
- Stir in bread cubes, cooked sausage, and cheese.
- Pour mixture into a greased baking dish.
- Bake uncovered for 35-40 minutes or until casserole is set and golden brown on top.
- Let cool slightly before serving.
Notes
You can add sauteed vegetables like bell peppers or onions for extra flavor. Serve warm with fresh fruit or toast.