3 c. elbow macaroni, cooked
1 1/4 c. Cheddar cheese, grated
1/2 c. onion, diced
1 c. buttermilk
1/2 tsp. pepper
Salt
1/4 c. butter
1 c. crushed Corn Flakes

In a greased 2-quart casserole, stir all ingredients together, reserving half of the Corn Flakes to sprinkle over the top of casserole. Bake at 375 degrees for 30 minutes.