Cheese Blintzes

10 prepared basic crepes
2 c. ricotta cheese or dry cottage cheese
1 (3 oz.) pkg. cream cheese (softened to room temperature)
2 T. sugar
1 egg yolk
1/2 t. vanilla

With wire whips cream all ingredients until smooth. Cover and refrigerate until ready to use. Place 3 T. filling in center of each crepe and roll. Place on serving dish. Sprinkle with powder sugar. Serve hot.