- 1/2 cup sour cream
- 1 tablespoon water
- 1 (2-1/4 tsp.) envelope Fleischmann's® Active Dry Yeast
- 1/2 cup butter OR margarine, softened
- 2 to 2-1/4 cups all-purpose flour
- 2 egg yolks (reserve egg whites for Nut Filling)
- Nut Filling
- 2 egg whites
- 1 cup finely chopped walnuts
- 1/2 cup sugar
- 1 teaspoon pure vanilla extract
- 2 to 3 tablespoons melted butter OR margarine
- Powdered sugar (optional)