Preheat the oven to 450 degrees F (230 degrees C). Grease a baking sheet.

Whisk flour, 1 cup melted butter, milk, baking powder, and salt together in a bowl until begins to pull together. Turn dough out onto a lightly floured surface; knead until smooth and elastic.

Roll dough out to ⅛-inch thickness; cut into 8-inch circles. Brush circles with remaining 3 tablespoons melted butter. Fold each circle in half, then fold in half again to form triangles. Press firmly to seal the layers; place on the prepared baking sheet.

Bake in the preheated oven until golden brown, about 15 minutes. Serve warm