1 bag bow-tie macaroni
4 to 5 med. potatoes, diced
1/2 chopped onion
1 stick butter

In separate pots, boil macaroni and potatoes until tender. Drain in a colander. Melt butter and onion in a skillet until brown. Alternate potatoes and macaroni in a bowl and add onions. Stir lightly and add Parmesan cheese, if desired.