Root Beer Cake

1 cup granulated sugar
1/2 cup butter
1/2 teaspoon vanilla extract
1 teaspoon salt
2 eggs
2 cups all-purpose flour
1 tablespoon baking powder
2/3 cup root beer

Combine all ingredients in a large mixer bowl. Blend at low speed, then beat 3 minutes at medium speed. Pour batter into a greased and floured 12 x 8-inch pan. Bake at 375 degrees F for 30 to 35 minutes. Cool, frost and store in the refrigerator.

Root Beer Frosting:
1 package Pillsbury vanilla frosting mix
1 cup cold root beer

Combine frosting mix and root beer in mixer bowl; blend well. Beat until thick and fluffy (4 to 5 minutes).