Kathie's StoryRoot Beer Floats are my favorite ice cream treat. This cake does the same for me and its easy to make.
I got this recipe from a newspaper several years ago.
yellow cake mix
good root beer
eggs, as cake mix directs
oil, as cake mix directs
root beer extract, optional, this intensifies the root beer flavor of the cake
1Prepare cake mix adding eggs and oil exactly as box directs. Substitute root beer for water called for. Add root beer extract if using. Pour batter into a greased 9 by 13 pan and bake as directed on box. Cool.
2For root beer float topping: Prepare Dream Whip with root beer substituted for the milk. Use both envelopes of Dream Whip to make a good amount of topping. Chill well.
3To serve: Cut cake into squares and place a large amount of topping on cake.
4NOTE: Let root beer sit a few minutes before measuring to assure accuracy. It bubbles so much you can end up with a dry cake if you don't give it a chance to release the bubbles. The flavor of this cake is light and most people like it but I actually like a stronger flavor and added the extract to the cake mix because of that.