This season, make an extra batch of treats for friends, coworkers, charities, or just someone who could use a lift—and pay it forward, sweetly.
HOW TO DOUBLE UP: Double the crumble mixture and the cake batter in large bowls. Bake cakes together on the same oven rack, rotating pans halfway through the cook time. If the cakes don't test done after 30 minutes, cook an extra 2 to 6 minutes, checking them every 2 minutes. Either give a whole cake to a friend, or package individual pieces.