Step 4: Bake those cakes
Spray the molds with non-stick cook spray.
Divide batter evenly among the molds, and bake until cakes spring back when touched, a toothpick inserted into the center comes out clean, and cakes are golden brown, about 20 to 22 minutes.
Remove from the oven and let cool for 5 minutes; then remove from the forms by peeling away the foil. Cool completely on racks.
Once cakes are cool, flip each over, and with a straw or a skewer make two holes on the bottom of the cake (three for full sized Twinkies). The point of this is to dig out some space for the filling to be injected later.