In a measuring cup, add buttermilk, molasses and orange zest; blend together with a small whisk and set aside.

In a medium mixing bowl, add flour, baking powder, baking soda, spices and salt. Add the butter bits and work it into the dry ingredients, using a fork or pastry cutter, until dough resembles coarse crumbs. You can also use a food processor and pulse a few times until coarse crumbs form (do not over mix).

Add the buttermilk mixture and stir until a soft dough forms. Fold in the cranberries and walnuts.

Transfer dough to a pastry mat and form the dough into a thick circle. Place on a parchment-lined baking sheet and cut into 8 wedges.

Bake at 400 degrees for about 12-14 minutes. Cool slightly on a wire rack and glaze if desired.

For Glaze: In a small bowl, whisk all the ingredients together making a smooth glaze. Drizzle over each scone.