Hamantaschen are traditionally associated with the Jewish holiday of Purim (which was February 28th-March 1st in 2018), but there's no law (religious or secular, hah!) against enjoying them any time of the year.
I enjoy making them not only because of the delightful contrast between the sweet fruit jam and buttery dough but also because I get to practice my pinching technique to form the signature triangle shape. Btw, although fruit or poppyseed are standard fillings, more unorthodox flavors of hamantaschen (pistachio and triple-chocolate) are arising all over the interwebs.
The recipe below is adapted from Saveur.
Ingredients
4 eggs
1 cup white sugar
1/2 cup vegetable oil
2 Tbs lemon juice
2 tsp vanilla extract
2 tsp baking powder
5 cups flour
1 1/2 cups strawberry preserves