I saw a 'zebra cake' on pinterest and decided I wanted to make it. Here's how to do it...
Make a white cake mix as directed and a chocolate cake mix as directed.
Spoon 2 cups of each flavor into a ziplock bag. (Each mix makes 4 cups of batter.)
Cut a hole in the corner of each bag and squeeze out about 2 TBSP of white batter into the center of your pan. I used a spring form. The squeeze chocolate on top of the white batter, alternating back and forth, 2 TBSP at a time.
After you have emptied both bags of batter, hold onto the sides of the pan and tap it against the counter, to smooth the batter evenly. DO NOT spread the batter with a spatula!