Grilled Cheese Cake

I made this cake for my grandmother who ALWAYS orders a grilled cheese sandwich no matter where she is-even if it isn't on the menu. It started out as a joke but once I started thinking about it, I had to see if I could do it. Thanks so much for the advice! It's a white cake with buttercream "cheese." French fries are fondant and gel "ketchup." I "grilled" it by buttering the top, sprinkling it with sugar, and setting it under the broiler on low and watching it like a hawk. I'm happy with the result.