Banana Upside-Down Cake: Omit pineapple, cherries and pecans. Sprinkle 2 tablespoons chopped walnuts over brown sugar mixture in pan. Cut 2 bananas into slices; arrange on brown sugar mixture.
Pear Upside-Down Cake: Substitute 1 large pear, thinly sliced, for the pineapple.
Raspberry Upside-Down Cake: Substitute 1 1/2 cups raspberries for the pineapple, granulated sugar for the brown sugar and sliced almonds for the pecans. Omit cherries. Decrease vanilla to 1/2 teaspoon; add 1/2 teaspoon almond extract.