So now I am confused if I should bake a 10x3" cake and put the cake dummy top of it or should I buy a 6x3 pan.
Can I put cake dummy on top of real cake?
When is the cake due? You can buy dummies online and have them shipped. I wouldn't put a dummy on top of a cake. I would also charge the customer for the cake dummy and the ingredients you still have to use to decorate it!
I buy my dummies from here.
Yes, you can put a dummy on top of a real cake.
According to the Wilton Party serving chart, a 10"x3" cake would serve 21 [3/4x28=21] and a 6"x3" would only serve 9 [3/4x12].
If you're OK with 21 party servings, then an 8"x3" dummy would be fine on top of that. You just put supports in the the real cake to hold the dummy. Put a circle of wax paper on the bottom of the dummy using royal icing or buttercream before placing it on the supports.
If you have time to order a dummy to go under the cake, it might just be easier for the cake to be served. That way all they will have to do is slice it instead of moving the dummy off.
Ahh!!! Yes...I wouldn't charge for it either! haha!
And they won't mind they have to lift the top layer off! It's for a gift! :)