I used up baking powder for Olive oil cake . That will make the lettering for Father's day. For the next batter, to submerge the letters in surprise, it now has to be a cake that does not require butter and baking powder, a Sponge Cake . Cake with biscotti lettters Pineapples in the pantry are the best air fresheners that can be. With cut pineapple around, I was very tempted to make pineapple-upside-down cake. But no butter, no brown sugar so I just put pineapple quarters in the muffin pan, here come out these sweet, perfect surprises with the sponge cake batter.