Does anyone have a good marble cake recipe? I was looking for something that used a box cake mix as a base.

For marble cake I just pour in white box cake mix (prepared) and then swirl in chocolate box mix (prepared) then bake as usual. You can combine all sorts of flavors in this manner.

There isnt really a specialized recipe for a marbled cake. If you mix up two different flavored cake batters, I pour them in a cup at a time alternating the flavors. Swirl with the tip of a knife if you want.

You can do any two flavors this way. French vanilla and strawberry are divine together.