½ cup (113 grams) (1 stick) unsalted butter, cold and cut into pieces
¾ cup (90 grams) milk or semi sweet chocolate chips or chunks
1 teaspoon pure vanilla extract
⅔ cup (160 ml) buttermilk
Egg mixture for brushing tops of scones:
1 large egg, lightly beaten
1 tablespoon milk
Instructions
Preheat oven to 400 degrees F (200 degrees C) and place rack in middle of oven. Line a baking sheet with parchment paper.
In a large bowl, whisk together the flour, sugar, baking powder, baking soda and salt. Cut the butter into small pieces and blend into the flour mixture with a pastry blender or two knives. The mixture should look like coarse crumbs. Stir in the chocolate chunks (or chips). In a small measuring cup whisk together the buttermilk and vanilla extract and then add to the flour mixture. Stir just until the dough comes together (add more buttermilk if necessary). Do not over mix the dough.
Transfer to a lightly floured surface and knead dough gently four or five times and then pat the dough into a circle that is about 7 inches (18 cm) round and about 11/2 inches (3.75 cm) thick. Cut this circle in half, then cut each half into 4 pie-shaped wedges (triangles). Place the scones on the baking sheet. Make an egg wash of one well-beaten egg mixed with 1 tablespoon milk and brush the tops of the scones with this mixture.
Bake for about 15 to 20 minutes or until golden brown and a toothpick inserted in the middle comes out clean. Transfer to a wire rack to cool. Makes 8 scones.
Recipe by In Good Taste at http://ingoodtaste.kitchen/chocolate-chip-scones/