this is an easy one-bowl sponge cake without butter! My mother and my Grandma Kate’s favorite was raspberry jam in this roll, but it’s also good with grape or strawberry. I like homemade blackberry, with the seeds strained out. Just use your favorite. My family always used the cake as the base for fresh strawberry or peach shortcake – it would soak up the fruit juices but not fall apart like pound cake.