Great-Grandmother Bubbie's Hamantaschen

Step 1
Place prunes and apricots into a large pot filled with water and bring to a rolling boil over high heat. Cook the fruit uncovered, stirring occasionally, until the fruit is tender, about 15 minutes. Drain fruit in a colander and mash together in a bowl using a fork. Set aside.

Step 2
Preheat an oven to 350 degrees F (175 degrees C).

Step 3
Whisk eggs, 1 cup sugar, oil, lemon zest, and orange zest together in a bowl and set aside. Sift flour and baking powder together in a large bowl. Stir in the egg mixture, kneading with hands until the dough comes together. Roll out dough to about 1/4 inch in thickness on a lightly floured surface. Cut circles out using a cookie cutter or the rim of a drinking glass.

Step 4
Mix prune and apricot mixture, lemon juice, walnuts, and 1/3 cup sugar in a bowl. Place a tablespoon of the filling in the center of the cookie. Pinch the edges firmly together to create a triangle, leaving the center open to expose the filling. Repeat with the remaining cookies.

Step 5
Bake in the preheated oven until golden brown, about 20 minutes. Cool in the pans for 10 minutes before removing to cool completely on a wire rack.