1 can condensed milk
1/2 c. lemon juice
2 egg yolks
1 med. Cool Whip
1 lg. graham cracker crust

Combine condensed milk, egg yolks and lemon juice until thick. Blend in Cool Whip. Beat until smooth and creamy. Pour into pie crust, cool in refrigerator for 15 minutes. Top with Cool Whip.