You definitely can, Martha! To make a 9" x 13" sheet cake, prepare the batter as directed. Pour it into a lightly greased 9" x 13" pan, and bake in a preheated 325°F oven for about 45 to 48 minutes, until the cake tests done. You'll have excess frosting if you make the entire frosting recipe; if you don't want to end up with leftover frosting, consider making a half recipe (which will frost the cake minimally), or a three-quarter recipe (which will frost it more generously). Happy baking! Kat@KAF

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