AWhen making a layer cake how many boxes of cake mix do you use? I used one box of carrot cake mix poured it into two 9inch round pans half full with batter but when I stacked them, the cake was, or at least seemed tiny. They came out pretty level so I didn't have to trim much off to stack them. I see other two layer cakes that seem much taller... Any advice?

 Torte each of the cakes so you wind up with 4 layers and 3 layers of filling.  That will make your final cake taller!

Theresa