Yes, you can use grated butter if you prefer. Use the same weight and I would either freeze and grate the butter or dice the butter whilst fridge cold. Best wishes and a very happy new year to you too ...
While some shortbread recipes instruct you to pull the round from the oven before it browns at all, this one should be a pale golden color. You can taste the butter in these luscious, flaky triangles.
Here is a recipe to make delicious brandy butter to accompany all of your favourite festive desserts! We particularly enjoy it with a homemade mince pie.