Preheat the oven to 350˚F. Line a large baking sheet with parchment paper and set aside.
In a bowl, whisk 2 cups all-purpose flour, 2 tsp baking powder, and ¼ tsp salt, and set aside.
In a large mixing bowl, add 4 tbsp room temperature butter and ¾ cup granulated sugar. Using a hand mixer, beat it well until light and fluffy.
Then add 2 eggs, 2 tsp orange zest, and ½ tsp vanilla extract. Mix it again until well combined.
Add the dry ingredients to the wet ones. Using a mixer on a low speed, mix until just combined and don’t overmix!
Then using your hands, lightly knead the dough, so it all comes together in one bowl and cut it in half.
Form the dough on the baking sheet into two rectangle logs, about 8x4-inches. Bake for about 20-25 minutes, until the edges are lightly golden color and the top is set.
Then take it out of the oven and let sit on the counter for about 20 minutes to cool off.
When it’s cooled, using a sharp knife, cut the logs into ½ or ¾-inch slices.
Place them back on the baking sheet cut side down and bake again for another 10 minutes, turning them halfway through.