Creating your Overnight Breakfast Casserole can be a seamless process if you follow these straightforward steps:

1. Brown the Sausage: In a skillet, cook the breakfast sausage over medium heat until browned. Drain excess fat and set aside.

2. Prepare the Egg Mixture: In a large bowl, whisk together eggs, milk, salt, pepper, garlic powder, and onion powder until well combined.

3. Combine Ingredients: In a large mixing bowl, add the bread cubes, cooked sausage, bell pepper, spinach, and half of the cheese. Pour the egg mixture over the top. Stir gently until everything is well coated.

4. Transfer to Baking Dish: Grease a 9×13 inch baking dish. Pour the mixture into the dish. Spread it evenly and press down gently to ensure it’s compact.

5. Top with Remaining Cheese: Sprinkle the remaining cheese evenly over the top of the casserole.

6. Cover and Refrigerate: Cover the baking dish with plastic wrap and place it in the refrigerator overnight. This allows the bread to soak up the egg mixture, enhancing flavor.

7. Preheat Oven: On the morning you’re ready to bake, preheat your oven to 350°F (175°C).

8. Bake the Casserole: Remove the plastic wrap and bake the casserole for 40-45 minutes or until the top is golden brown and a knife inserted in the center comes out clean.

9. Cool Before Serving: Once baked, let the casserole cool for a few minutes before slicing and serving.

By following these easy steps, your Overnight Breakfast Casserole will turn out perfectly every time you make it!