Watergate Cake
["1 pkg. sour cream cake mix", "1 (4 serving size) pkg. Jell-O pistachio pudding", "2 eggs", "1 c. oil", "1 c. club soda", "1/2 c. chopped nuts"]
["Mix all ingredients.", "Pour into greased and floured 9 x 13-inch pan.", "Bake at 350\u00b0 for 35 to 40 minutes or until center springs back when lightly touched.", "Frost and store in refrigerator."]
["sour cream cake mix", "eggs", "oil", "club soda", "nuts"]