Pineapple Cherry Crumbcake
["1 (20 oz.) can pineapple", "1 can cherry pie filling", "1 yellow cake mix", "2 sticks margarine"]
["Put in 9 x 13-inch pan as listed.", "Pour melted margarine over top of cake mix.", "Bake at 350\u00b0 for 45 minutes.", "Sprinkle pecans on top.", "Cook 10 to 15 minutes longer."]
["pineapple", "cherry pie filling", "yellow cake", "margarine"]