Caramel Apple Cinnamon Scones

all-purpose flour (measured correctly), plus more for hands and work surface

and 1/2 teaspoons baking powder

and 1/4 teaspoons ground cinnamon

teaspoon salt

cup (115g) unsalted butter, frozen

heavy cream

large egg

packed light or dark brown sugar

teaspoon vanilla extract

heaping cup (125g) peeled and chopped apple (I use Granny Smith)1

optional: 1 Tablespoon cream and coarse sugar

store-bought or homemade caramel sauce2