Sausage Egg Breakfast Casserole
Make-ahead sausage egg breakfast casserole with cubed bread, cheddar, and fully cooked breakfast sausage—the USA brunch bake that feeds a crowd. Eggs set firm in the oven (no runny custard), perfect for holidays, meal prep, or potluck mornings.
🛒Ingredients
- 1 pound breakfast sausage (pork or turkey)
- 6 cups day-old bread cubes (about 1-inch; French or sandwich bread)
- 8 large eggs
- 2 cups whole milk
- 1 teaspoon Dijon mustard
- 1 teaspoon kosher salt
- 1/2 teaspoon black pepper
- 1/2 teaspoon garlic powder
- 2 cups shredded sharp cheddar cheese, divided
- 2 green onions, sliced (optional)
- Butter or nonstick spray for the pan
🔧Kitchen Tools Needed
- 9×13-inch baking dish
- Skillet
- Mixing bowl
- Whisk
- Instant-read thermometer
📝Instructions
- 1
Preheat oven to 350°F. Grease a 9×13-inch baking dish.
- 2
Cook sausage in a skillet over medium heat, breaking it up, until no pink remains and it reaches 160°F for pork sausage or 165°F for turkey sausage. Drain fat.
- 3
Scatter bread cubes in the dish. Top with cooked sausage and 1 1/2 cups cheddar.
- 4
Whisk eggs, milk, Dijon, salt, pepper, and garlic powder until smooth. Pour evenly over the bread. Press gently so bread soaks up custard. Sprinkle remaining cheese and green onions.
- 5
Bake 40–50 minutes until the center is set (internal temperature of the egg mixture at least 160°F) and the top is golden. A knife inserted in the center should come out clean—no liquid egg.
- 6
Rest 10 minutes before slicing. Refrigerate leftovers within 2 hours; reheat to steaming hot (165°F).
🥗Nutrition Information
⚡Calories per serving: 410
🏷️Recipe Tags
❓Frequently Asked Questions
Can I assemble overnight?
Yes—cover and refrigerate unbaked up to 12 hours. Bake cold from the fridge; add 5–10 minutes if needed until eggs hit 160°F+.
Gluten-free?
Use gluten-free bread cubes the same way.
Why is the center soggy?
Underbaking. Cook until the center is firm and registers at least 160°F.
Turkey sausage?
Works great—cook to 165°F before assembling.
Make it spicy?
Use hot breakfast sausage or add a pinch of cayenne to the egg mix.
