Aunt Virginia'S Toffee
["1 c. light brown sugar", "1 stick margarine (Fleischmann's)", "1 stick butter", "1 c. chopped pecans", "6 Hershey bars (small size pkg. 6 to a pkg. usually found in candy shelf)", "1 (15 x 10 x 9/16) foil cookie sheet, lined with Keebler graham crackers, set aside"]
["Preheat oven to 350\u00b0. In saucepan, heat brown sugar, margarine and butter to boiling. Cover over medium/low heat for 2 minutes. Remove from heat and stir in nuts."]
["light brown sugar", "margarine", "butter", "pecans", "cookie sheet"]