Shepard's Pie

1 lb ground beef, browned
6-8 servings of instant mashed potatoes, cooked (if you have leftover mashed potatoes, even better)
1 can cream of mushroom soup
1 cup grated cheddar cheese

Add cream of mushroom soup to the browned hamburger, season with salt and pepper and onion powder. Pour into a 1-2 qt casserole dish. Top with mashed potatoes and cheese. Bake at 350 for 20 minutes, or until warmed through.