1 pkg. (4 serving size) Jello vanilla instant pudding (or any other flavor)
1/2 c. confectioners' sugar
1 c. cold milk
1 (8 oz.) Cool Whip

Combine pudding, sugar and milk, beat slowly with rotary beater or at lowest speed until well blended (1 minute). Fold in Cool whip. Spread on cake at once. Refrigerate. For firmer frosting, let mixture stand 5 minutes before folding in Cool Whip.