Add 300 g water to mixer bowl. Insert simmering basket and add pumpkin. Cook for 12 min/steaming temp or 120℃/speed 3/MC on.
Discard water. Add cooked pumpkin to mixer bowl and mix for 20 sec/speed 4/MC on. Scrape down and transfer pumpkin to a plate. Chill in the fridge to cool completely.
Preheat fan-forced oven to 180°C.
Without washing the bowl, add icing ingredients (if dipping, you can double the icing). Mix for 20 sec/speed 5/MC on. If icing is too thick, add a little extra milk or cream. Scrape into a piping bag and set aside.
Without washing the bowl, add frozen butter to mixer bowl. Mix for 5 sec/speed 5/MC on. (It will be chunky — this is what gives you that gorgeous flaky scone texture.)
Add flour, baking powder, spices and brown sugar. Mix for 5 sec/speed 4/MC on, scrape down.
Add cooled pumpkin, cream, egg and vanilla. Mix for 5 sec/speed 4/MC on. Transfer mixture onto a dough mat or lightly floured surface.
Gently bring dough together into a ball, you may need to dust lightly with some flour. Flatten into a disc about 3–4 cm high. Cut into 8 triangle slices.
Place slices on a baking paper lined tray, leaving 5 cm between each, Brush the tops with milk.
Bake for 15–20 min, or until cooked through and golden.
Allow to cool 10–15 min before icing. Drizzle for a lighter finish, or dip each slice to coat completely.