Apple Upside-Down Cake
["1/2 c. margarine", "1 c. sugar", "2 eggs", "1 tsp. vanilla", "2 c. flour", "1 tsp. baking powder", "1 tsp. baking soda", "1 c. sour cream", "1 jar (7 oz.) Marshmallow Creme", "1 Tbsp. lemon juice", "1 1/2 tsp. cinnamon", "2 c. peeled apple slices", "1 c. chopped nuts"]
["Beat margarine and sugar until light and fluffy.", "Add eggs, 1 at a time, mixing well after each addition.", "Blend in vanilla. Add combined flour, baking powder and baking soda alternately with sour cream, mixing well after each addition."]
["margarine", "sugar", "eggs", "vanilla", "flour", "baking powder", "baking soda", "sour cream", "Marshmallow Creme", "lemon juice", "cinnamon", "apple slices", "nuts"]