Preheat oven to 350 F. Prepare pan with baking spray with flour, such as Baker’s Joy. Avoid using a nonstick spray with lecithin listed as an ingredient as a gummy residue can build up over time.
Whisk together flour, powder, soda, apple pie spice and salt; set aside.
In medium bowl, whisk together melted butter and sugar. Add applesauce, egg, vanilla and water and combine.
Slowly add flour mixture to wet ingredients until combined. Pour evenly into pan, filling no more than 3/4 full.
Bake 12-15 minutes or until toothpick inserted into center of cakes comes out clean. Let cakes cool in the pan 10 minutes; unmold onto wire rack. Wipe out wells of pan, reapply baking spray and repeat with remaining batter.
Store cooled cakelets in an airtight container until ready to serve.
Top with a caramel sauce, simple glaze or light dusting of powdered sugar.