Mornings welcomed with this best-ever breakfast casserole are guaranteed to be great. Hearty and delicious, but so easy to make, this amazing casserole is made with just seven main ingredients – yellow onion, ground sausage, eggs, milk, parmesan cheese, gouda cheese, and bread. The whole family will love this yummy recipe, it’s perfect for the holiday season or as a special weekend breakfast or brunch. Simply prepare ahead of time and bake the morning of – so easy!
Start by spraying a large 9 x 13-inch casserole dish with non-stick cooking spray. Preheat your oven.
The first step is to sauté the onions and sausage in a little olive oil until fully cooked. Once cooked remove from heat and allow them to cool slightly. Next, whisk together the eggs, milk, salt, black pepper, and garlic powder until fully combined. Add the sausage and the shredded cheese to the egg mixture.
Arrange the day-old bread in the bottom of your prepared baking dish then pour the egg and meat mixture over the top.
Bake in a preheated. You know your breakfast casserole is fully cooked when the outside edges are firm and golden, and the center isn’t jiggly anymore.