Combine honey, lemon juice, and prunes in a saucepan. Add water to cover. Boil, then simmer until prunes are softened (10 minutes). Let the filling cool.

Preheat oven to 350°F (175°C). Line 3 baking sheets with parchment paper.

Mix flour, baking powder, and salt in a bowl.

Cream sugar, butter, and shortening together using a wooden spoon. Add eggs, orange juice, and vanilla. Gradually fold in flour mixture to form dough. Divide into 3 balls.

Roll out each dough ball to ¼-inch thickness. Cut into circles using a glass rim.

Place ½ teaspoon prune filling in center of each circle, pinch edges to form triangular pockets, and transfer to baking sheets.