01 - Preheat oven to 400°F. Line a baking sheet with parchment paper.
02 - In a large mixing bowl, whisk together the flour, baking powder, baking soda, and salt until evenly distributed.
03 - Add the cold, cubed butter to the flour mixture. Using your fingertips or a pastry cutter, rub the butter into the dry ingredients until the mixture resembles coarse crumbs with some pea-sized pieces remaining.
04 - In a separate bowl, whisk together the hummus, milk, and egg until smooth and well combined.
05 - Pour the wet mixture into the dry ingredients and stir gently with a fork or spatula until just combined. Avoid overworking the dough to keep the scones tender.
06 - Gently fold in any optional additions such as fresh herbs, crumbled feta, or toasted sesame seeds.
07 - Turn the dough out onto a lightly floured surface. Pat it into a 1-inch thick round. Using a 2.5-inch round cutter, cut out scones and place them on the prepared baking sheet. Gently re-roll scraps to cut remaining scones.
08 - Optionally brush the tops with a little milk and sprinkle with extra sesame seeds or herbs for a golden finish.
09 - Bake for 18 to 20 minutes until the scones are golden brown and risen. Transfer to a wire rack to cool slightly before serving warm.