Watergate Cake with Cover Up Frosting

I had no idea while eating this cake as a child of the '70s, that it was popular because of the Watergate scandal was taking
place. I just thought it was good:)

1 (18 1/4 ounce) box plain white cake mix
1 (3.4 ounce) box instant pistachio pudding mix
1 cup vegetable oil
1 cup ginger ale
3 large eggs

Preheat the oven to 350. Grease a 13 x 9-inch pan with vegetable oil spray.

Mix cake mix, pudding mix, oil, ginger ale and eggs into a large
mixing bowl. Pour the batter into the prepared pan, smoothing the top
with the rubber spatula. Place the pan in the oven. Bake the cake
until it springs back when lightly pressed with your finger, 35 to 40
minutes. Remove the pan from the oven and place it on a wire rack to
cool completely, 30 minutes more.

Cover-Up Frosting
1 (3.4 ounce) box instant pistachio pudding mix
1 1/2 cups milk
1 (8 ounce) container frozen whipped topping, thawed

Whisk pudding mix and milk together in a large mixing bowl. It should
thicken up but not set, from 2 to 3 minutes. Gently fold in whipped
topping. Spread the top with frosting. Sprinkle toasted nuts
over the top, if desired. Store, covered, in the refrigerator.