Hi,
I'm making my first two tiered cake for my son's 1st birthday this weekend. I just have a couple questions -- do you normally use a 6 inch and a 10 inch cake to do this? And because I won't be transporting it anywhere do I still need to use dowels and supports? If I just put one cake on top of the other will that work? Thanks so much!

The size you use is really determined by the number of people you are planning on serving. I would use the 6 inch for the smash cake and the 10 inch for serving the guests. (10 inch 2 layer does 28 party size pieces). If you want bigger pieces or there are going to be more people increase the size of the bottom tier. I always dowel, it quick and insures no accidents!
Don't forget to post pics! Happy baking.

Jibbies

You use the size tiers that equal the number of people you need to feed. You can use a 6 and an 8, a 6 and a 9, a 6 and a 10 - it depends on servings, and somewhat on design.

YES you need the dowels to support the 6" cake. No you don't need a center dowel as that is for transporting.

(Of course as we all know, I don't use dowels, even for a little cake like this I use SPS. )