Eggs Florentine Casserole

1 pound Pork Sausage Roll
2 tablespoons butter
1 large onion, chopped
1 cup sliced fresh mushrooms
1 package (10 ounces) frozen chopped spinach, thawed and squeezed dry
12 large eggs
2 cups 2% milk
1 cup (4 ounces) shredded Swiss cheese
1 cup (4 ounces) shredded sharp cheddar cheese
1/4 teaspoon paprika

Preheat oven to 350°. In a large skillet, cook sausage over medium heat 6-8 minutes or until no longer pink, breaking into crumbles; drain and transfer to a greased 13x9-in. baking dish. In same skillet, heat butter over medium-high heat. Add onion and mushrooms; cook and stir 3-5 minutes or until tender. Stir in spinach. Spoon vegetable mixture over sausage.

In a large bowl, whisk eggs and milk until blended; pour egg mixture over vegetables. Sprinkle with cheeses and paprika. Bake, uncovered, 30-35 minutes or until the center is set and a thermometer inserted in center reads 165°. Let stand 10 minutes before serving. Makes 12 servings.