Root Beer Float Cake

(Courtesy of Taste of Home)

Ingredients:
1 pkg. white cake mix (regular size)
1 3/4 c. cold root beer, divided
1/4 c. canola oil
2 large eggs
1 envelope whipped topping mix

Directions:
In a large bowl, combine cake mix, 1 1/4 c. root beer, oil and eggs.  Beat on low speed for 2 minutes or stir by hand for 3 minutes. 

Pour into a greased 9x13 baking pan.  Bake at 350 degrees for 30-35 minutes or until a toothpick inserted near the center comes out clean.  Cool completely on a wire rack.

In a small bowl, combine the whipped topping mix and remaining root beer.  Beat until soft peaks form.  Frost cake.  Store in the refrigerator.