Step 1

Preheat the oven to Line a baking sheet with parchment or silicone, then set aside.

Step 2

In a large bowl, whisk together the flour, sugar, baking powder, and salt. Grate the cold butter into the flour mixture and toss to coat.

Step 3

In a small bowl, whisk together the half and half, egg, and vanilla. Pour the wet ingredients into the dry ingredients, and mix until just combined, being careful not to overmix. The dough should be a little rough and shaggy, but should hold together.

Step 4

Gently pat the dough out on a floured surface into a rectangle that is approximately 8 inches tall and 10 inches wide.

Step 5

In a small bowl, mix together the brown sugar and cinnamon. Spread the brown sugar mixture evenly over the dough.

Step 6

Gently roll the dough up, starting on the wider side, to form a long tube. Cut the dough into ten even-sized pieces, and place them on the prepared baking sheet. Bake 18-20 minutes, or until golden brown. Let cool.

Step 7

In a small bowl, whisk together the powdered sugar and 1 tablespoon milk. Add additional milk, as needed, to make a smooth and somewhat runny glaze. Drizzle the glaze over the cooled scones and let set.