1      pound         ground beef
               1/2  cup           onion -- chopped
               1/2  cup           green bell pepper -- chopped
             1      jar           spaghetti sauce -- (28 oz.)
             1      box           medium shell macroni -- (7 oz.)
             1      cup           sour cream
             1      cup           mozzarella cheese
             1      package       pepperoni slices

          Cook ground beef, onion and pepper; drain,  Cook macroni per package
          instructions.  Cut up pepperoni and combine with spaghetti sauce, meat,
          and macroni.  Mix well.  Pour mixture into a 9x13 inch baking dish and
          top with sour cream and mozarella.  Arrange whole pepperoni slices over
          top of casserole.  Bake at 350 degrees for 45-60 minutes.