Step 4: Prepare the Egg Mixture
In a large bowl, whisk together eggs, milk, salt, pepper, and mustard powder. The milk ensures the casserole is creamy and fluffy, while the mustard powder gives a subtle kick.
Step 5: Assemble the Casserole
- Place the cubed bread evenly in the prepared baking dish.
- Sprinkle the cooked sausage over the bread.
- Add the sautéed onion and bell pepper.
- Pour the egg mixture evenly over everything. Make sure the bread is soaked for a few minutes to absorb the liquid.
- Top with shredded cheddar cheese for a golden, melty layer.
Step 6: Bake
Cover the dish with aluminum foil and bake in the preheated oven for 25–30 minutes. Remove the foil and bake for an additional 10–15 minutes until the top is golden brown and the eggs are set.
Step 7: Serve
Allow the casserole to cool for 5–10 minutes before slicing. Garnish with fresh parsley if desired. Serve warm with a side of fruit, toast, or your favorite breakfast beverage.
Tips for the Perfect Casserole
- Use day-old bread: It absorbs the egg mixture better without getting soggy.
- Mix up the cheese: Try a blend of cheddar and mozzarella for extra gooeyness.
- Make it ahead: Assemble the casserole the night before and refrigerate. Bake in the morning for a stress-free breakfast.
- Add veggies: Spinach, mushrooms, or tomatoes make it healthier and colorful.
Why This Breakfast Sausage Casserole Works
This casserole is the ultimate comfort breakfast because it combines textures — soft bread, creamy eggs, melty cheese, and savory sausage — all in one dish. It’s filling, flavorful, and flexible, perfect for any morning when you want something hearty without spending hours in the kitchen.
Whether you’re feeding a crowd or just want a weekend treat, this Breakfast Sausage Casserole will quickly become a staple recipe in your kitchen.
If you want, I can also create a quick version with only 5 ingredients that’s super easy for busy mornings — it’ll take less than 20 minutes to prep!
Do you want me to do that?
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