Step 1: Preheat your oven to 400°F (200°C) to ensure your scones rise perfectly.
Step 2: In a large mixing bowl, whisk together flour, sugar, baking powder, and salt.
Step 3: Add cubed butter to the flour mixture and cut in until it resembles coarse crumbs.
Step 4: Gently fold in the mini chocolate chips.
Step 5: In a separate bowl, whisk together heavy cream, egg, and vanilla extract.
Step 6: Pour wet ingredients into dry ingredients and stir until just combined.
Step 7: Turn the dough onto a floured surface and knead gently. Pat into a circle about 1-inch thick, then cut into wedges.
Step 8: Place on a lined baking sheet, brush with vegetable oil, and sprinkle with additional chocolate chips.
Step 9: Bake for 15-20 minutes or until lightly golden on top.
Step 10: Allow to cool briefly on the baking sheet before transferring to a wire rack. Serve warm or at room temperature.