Heath Toffee Bar Coffee Cake
["1/2 c. margarine", "2 c. flour", "1 c. brown sugar", "1/2 c. granulated sugar", "1 c. buttermilk", "1 tsp. soda", "1 egg", "1 tsp. vanilla", "1 c. Heath Toffee Bars, chopped (6 oz.)", "1/4 c. pecans, chopped"]
["Blend flour, margarine and both sugars.", "Set aside 1/2 cup of this mixture.", "To the remainder add the buttermilk, soda, egg, vanilla and 1/2 c. of chopped Heath bars.", "Blend well.", "Pour into greased and floured 9 X 12 baking pan.", "Mix remaining 1/2 c. Heath bars with chopped pecans and add to set-aside mixture.", "Sprinkle evenly over top of batter.", "Bake at 350\u00b0 for 30 minutes."]
["margarine", "flour", "brown sugar", "sugar", "buttermilk", "soda", "egg", "vanilla", "Toffee", "pecans"]