Try this recipe,

2 pkg frozen blintzes
1 1/2 pts sour cream
6 eggs
1 tsp vanilla extract
1/2 cup orange juice
1/2 cup sugar
Cinnamon
Mix together the sour cream, sugar, vanilla extract, orange juice and eggs.

In a large baking pan melt 1 stick of butter/margarine. Put in frozen blintzes and coat with the melted butter. Arrange blintzes in pan. Pour sauce into pan and bake for 40 minutes at 350 degrees F.

Enjoy