Our hamantaschen was filled with fruit jam or chocolate chips, or chocolate, however you can also fill it with a prune filling, poppy seeds, figs, etc.
Dough :
3/4 cup sugar
2 1/2 cups all purpose flour
2 teaspoons baking powder
1/3 cup or 175g butter or margarine cut into pieces2 tablespoons water
1/2 teaspoon vanilla extract
1 egg, beaten
Egg wash : 1 egg, beaten and 1 teaspoon water
Preheat the oven to 200°C (350°F).
Stir together the sugar, flour and baking powder in a bowl. Add the butter pieces and mix in with a fork until crumbly. Add the water, vanilla extract, and egg. Mix until the dough comes together in a ball.
If you have time you can refrigerate the dough for 20 minutes OR continue directly to next stage
Sprinkle flour on a work surface and a rolling pin, then flour your hands. Pinch off a piece of dough and roll it out. Cut dough with cutter into circles. Brush lightely with egg wash. Put a teaspoon of filling in te centre of the circle. Fold up three edges of the dough and pinch them together to make a triangle. Brush the entire cookie with egg wash.
Place on a baking sheet. Bake until light golden at the edges, +/- 20 minutes in a conventional oven (not fan). Let cool on a rack. Repeat
A variation : instead of using 2 tablespoons of water you could use freshly squeezed orange juice OR for fun you could sprinkle rainbow sprinkles on the top once the triangle has been made. The dough can also be used for simple cookies.