Butter Pecan Cake Mix I Want To Make A Layered, But Light Cake-like Dessert?

I want to make a layered, but light cake-like dessert? - butter pecan cake mix

I will make a real cake for the christening of my son buy the next three weeks.

The menu is definitely not needed there to help.

However, I wish I had a dessert served with the cake. I thought of something that I can mousse and pistachio pudding is in trouble because of low weight, but also as a cake. I thought about using a box cake mix nut butter.

Perhaps cupcakes filled with milk (I'm freezing all the objects in the furnace when melting could do), and "Frost garnish" on pistachio mousse with chopped nuts? What do you think? I wanted to do something for diapers, but I'm beginning to love this idea cupcake. HELP!