Mama-T used to bake muffins using Duncan Hines Butter Cake mix and served them with either chocolate sauce or pineapple sauce.
1 ½ cups sugar
1 Tbsp. cocoa (for chocolate) or 1 small can crushed pineapple
4 Tbsp. flour (heaping)
1 cup milk
Mix ingredients and cook slowly until thickened. For the chocolate sauce, add 1 Tbsp. margarine and ½ tsp. vanilla after cooking.
To make pie filling instead of muffin sauce, follow the recipe above and add 3 egg yolks.