Potatoes
Onions
butter
Salt and pepper to taste

Spread aluminum foil on counter top. Fold edges to make a leakproof seal. Cut large potatoes into quarters, or medium potatoes into halves. Cut large onions in to wedges. Spread out over aluminum foil. Salt and pepper to suit your taste; dice a stick of butter and spread over all. Wrap aluminum foil and seal ends. Bake in a 350 degree oven for 45 minutes or until potatoes are tender.