Preheat oven to 375°. In a large skillet, cook sausage over medium heat 6-8 minutes or until no longer pink, breaking it into crumbles; drain. Unroll crescent roll dough into a greased 13x9-in. baking dish. Seal seams and perforations. Sprinkle with sausage and cheese., In a large bowl, whisk eggs, milk, salt and pepper. Pour over sausage and cheese., Bake, uncovered, 35-40 minutes or until a knife inserted in the center comes out clean. Let stand 5-10 minutes before serving., To make ahead: Refrigerate unbaked casserole, covered, several hours or overnight. To use, preheat oven to 375°. Remove casserole from refrigerator while oven heats. Bake as directed, increasing time as necessary until a knife inserted in the center comes out clean. Let stand 5-10 minutes before serving.