Pastry:

1 cup (2 sticks) cold butter
2 cups all-purpose flour
1 tablespoon vinegar
1 tablespoon cold water
1 egg yolk
Pinch salt

Filling:

6 apples, peeled and diced
1 1/2 teaspoons cinnamon
6 tablespoons all-purpose flour
3/4 cup sugar

Glaze:

1 1/2 cups confectioners' sugar
4-6 tablespoons water

Cut the butter into the flour. Mix the rest together and add slowly to the flour. Shape the dough into a ball and cover and refrigerate for 2 hours.

Mix all the filling ingredients together. Set aside. Mix glaze ingredients together and set aside.

Roll the dough into 4-inch squares. Put a spoonful of filling in the center of each square and fold into a triangle. Press the edges together with the tines of a fork. Make five small slits on the top of each turnover with the tip of a knife.

Bake on a cookie sheet for 15-20 minutes. While still hot, drizzle with glaze.

Note: This dough is also good for knishes, rugelach or pot pie crusts.