There’s nothing better than waking up to the smell of a warm, cheesy breakfast casserole baking in the oven — and this Savory Breakfast Sausage and Cheese Casserole delivers everything you want in a cozy morning meal. It’s rich, satisfying, and perfect for feeding a crowd with minimal morning effort.
Loaded with savory breakfast sausage, fluffy eggs, melty cheese, and bread cubes to soak it all up, this casserole is ideal for weekend brunch, holidays, or meal prepping for the week ahead. Plus, you can prep it the night before and just pop it in the oven the next day!
🛒 Ingredients
- 1 lb breakfast sausage (pork or turkey)
- 6 large eggs
- 2 cups whole milk (or 1½ cups milk + ½ cup cream for richness)
- 1 teaspoon Dijon mustard (optional, adds depth)
- ½ teaspoon garlic powder
- ½ teaspoon salt
- ¼ teaspoon ground black pepper
- 4 cups cubed bread (day-old white, sourdough, or French bread)
- 1 ½ cups shredded sharp cheddar cheese
- Optional: ¼ cup chopped green onions or chives
👩🍳 Instructions
1. Cook the sausage
In a skillet over medium heat, cook the breakfast sausage until browned and fully cooked. Break it into crumbles. Drain excess fat if needed. Set aside.
2. Whisk the egg mixture
In a large mixing bowl, whisk together eggs, milk, mustard (if using), garlic powder, salt, and pepper.
3. Assemble the casserole
Grease a 9×13-inch baking dish. Spread the cubed bread evenly across the bottom. Top with cooked sausage and sprinkle with shredded cheese. Pour the egg mixture evenly over the top. Press down gently to make sure all the bread is soaking in the liquid.
4. Chill or bake
Cover and refrigerate for at least 30 minutes (or overnight). When ready to bake, preheat oven to 350°F (175°C).
5. Bake
Bake uncovered for 45–50 minutes, or until the top is golden and the center is set. A knife should come out clean when inserted in the middle.
6. Cool and serve
Let rest for 5–10 minutes before slicing. Garnish with green onions or fresh herbs, if desired.
💡 Tips
- Use slightly stale bread — it holds up better and soaks the egg mixture perfectly.
- Let it rest after baking so it slices cleanly and firms up slightly.
- Add veggies like sautéed bell peppers, mushrooms, or spinach for extra flavor and nutrition.
- Prep ahead: Assemble it the night before for zero stress in the morning.
- Try a mix of cheeses like Monterey Jack, mozzarella, or pepper jack for variation.
🔄 Variations and Substitutions
- Make it spicy: Use spicy sausage or add a pinch of red pepper flakes.
- Go crustless: Skip the bread and pour over roasted potatoes or hash browns instead.
- Dairy-free version: Use plant-based milk and dairy-free cheese.
- Vegetarian option: Use a meatless sausage or omit the sausage and add extra veggies.
- Mini servings: Pour into muffin tins and bake for 20–25 minutes for individual portions.
❓ FAQs
Can I freeze breakfast casserole?
Yes! Bake, cool, and freeze individual portions or the whole dish. Reheat in the oven or microwave until warmed through.
How long does it keep in the fridge?
Up to 4 days in an airtight container. Great for weekly meal prep.
Can I make it without bread?
Absolutely — swap in shredded hash browns, roasted potatoes, or even cooked quinoa for a bread-free version.
Why is my casserole watery?
Excess liquid can come from undercooked sausage or too much moisture in veggies. Cook and drain ingredients well before assembling.
🍽 Serving Suggestions
- Serve with fresh fruit or a light green salad to balance the richness.
- Add a side of salsa or hot sauce for a flavorful kick.
- Pair with orange juice, coffee, or mimosas for the perfect brunch.
- Top with sliced avocado or sour cream for a creamy, fresh contrast.
- Make it a brunch spread with muffins, pastries, and a yogurt bar.
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