Zippy Egg Casserole

1 pound pork sausage

1 (5.5 ounce) package seasoned croutons

1 ½ cups shredded Cheddar cheese

1 cup shredded Swiss cheese

1 cup shredded pepperjack cheese

8 eggs

1 pint half-and-half cream

1 ½ cups milk

1 ½ teaspoons dry mustard

1 tablespoon minced onion

salt and pepper to taste

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

In a lightly greased 9x13 inch baking dish, arrange the croutons in a single layer. Layer with Cheddar cheese, Swiss cheese, and pepperjack cheese. Top with the 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 degrees F (175 degrees C) for 45 to 60 minutes. Let sit for 20 minutes before serving.