Hash Browns
["4 large potatoes", "1 small onion", "1/2 tsp. salt", "1/8 tsp. pepper", "2 Tbsp. margarine", "2 Tbsp. oil"]
["In saucepan, heat 1-inch salted water to boiling (1/2 teaspoon salt).", "Add potatoes and cover tightly.", "Cook 35 minutes.", "Drain and cool."]
["potatoes", "onion", "salt", "pepper", "margarine", "oil"]