Pumpkin pie spice Whipped cream (optional) Combine milk, butter, eggs, sugar, biscuit mix, pumpkin and pie spice to taste in blender. Blend until mixed. Turn into greased 23 cm pie pan and bake at 200ºC 25 to 35 minutes, or until knife inserted halfway between center and rim comes out clean. Cool. Serve with whipped cream, if desired.