I'm thinking you might have to run to the store anyway; sorry. It's frustrating. I had to make a half-hour drive, one way, this morning for a $1.69 item that I passed twice yesterday! Not a happy camper. But now I have what I need to do it right, and you will too.Your other option would be to bake a vanilla cake and make chocolate icing with chocolate chips if you have any. Good luck!