Overnight Cheese and Egg Casserole

Place sausage in large, deep skillet. Cook over medium-high heat until evenly browned. Drain, crumble and set aside.

In a lightly greased 9x13 inch baking dish, arrange the croutons in a single layer. Layer with all cheeses and top with cooked sausage.

In a large bowl, beat together the eggs, half-and-half, milk, mustard, onion, salt, and pepper. Pour into the dish over the sausage.

Cover, and refrigerate overnight.

The next morning, bake in an oven preheated to 350°F for 45 to 60 minutes.

Let sit for 20 minutes before serving.