I might want to try the receipe Oomis posted because it doesn’t use margarine, but I don’t make Hamantashen till right before Purim.
Anyway here is the Hamantashen receipe from the Kosher Palette
1/2 cup margarine(1 stick)
1 cup sugar
1 large egg
1/3 cup orange juice
1 teaspoon vanilla extract
3 cups all-purpose flour
2 teaspoons baking powder
1/2 teaspoon salt
Preheat oven to 350 degrees
Beat margarine at medium speed with an electric mixer until creamy; gradually add sugar, beating well. Add egg, O.J. and vanilla
combine flour, baking powder, and salt. Add to margarine mixture; stir into a uniform dough.
Shape dough into a flat disk. Cover in plastic wrap and refigerate at least 15 minutes(maybe made 2 days ahead).
Roll out chilled dough on a lightly floured surface to 1/8-inch thickness. Cut 3 inch circles with a cookie cutter or drinking glass.
Place 1/2 teaspoon of whatever filling you want to use in the center and shape into Hamantashen. Place hamantashen 1 inch apart on a greased baking sheet or a parchment lined baking sheet. Bake 20-35 minutes.
yield about 4 dozen.
Note: The orginal receipe has you brush the hamantashen with Egg white and then sprinkle Cinnamon-sugar on top. I skip that processs, but want to let you know that you have that option.