Watergate Cake With Impeachment Frosting
["1 pkg. white cake mix", "1 pkg. pistachio instant pudding and pie mix", "3 eggs", "1 c. oil", "1 c. club soda", "1/2 c. chopped pecans (optional)"]
["Blend all ingredients in a large bowl, then beat at medium mixer speed for 2 minutes.", "Bake in greased and floured 13 x 9-inch pan for 45 minutes in 350\u00b0 oven.", "Cool on rack."]
["white cake mix", "pistachio instant pudding", "eggs", "oil", "club soda", "pecans"]