baking again- pineapple upside down?

gonna bake a pineapple upside down cake from the ol recipe book. 2 Tbspn butter, 1/3 Cup packed brown sugar, 1 8oz can pineapple slice drained, 1 & 1/3 C all purpose flour, 2/3 granulated sugar, 2 tsp baking powder, 2/3C milk, 1/4C butter softened, 1 egg, 1 tsp vanilla.