Gnocchi Casserole

Brown sausage in a skillet over medium heat; drain. Meanwhile, cook gnocchi according to package directions; drain. In a greased 2-quart casserole dish, combine all ingredients except one cup cheese. Bake, uncovered, at 350 degrees for 25 minutes, or until heated through. Top with remaining cheese and bake for another 10 minutes, or until cheese is melted.