Graham Streusel Coffee Cake
["1 1/2 c. graham cracker crumbs", "3/4 c. packed brown sugar", "2/3 c. margarine or butter, melted", "1 to 2 layer yellow or white cake mix", "3 eggs", "3/4 c. chopped pecans", "1 1/2 tsp. cinnamon", "1 c. water", "1/4 c. oil", "powdered sugar icing"]
["For Streusel:", "In medium bowl, combine graham crumbs, pecans, brown sugar and cinnamon.", "Stir in melted butter and set aside."]
["graham cracker crumbs", "brown sugar", "margarine", "layer", "eggs", "pecans", "cinnamon", "water", "oil", "powdered sugar icing"]