The Christmas Bakery is the only place where you can bake a Gingerbreadman from a Lump of Cake Dough, if you've learnt the Gingerbread Recipe already. Use the lump on any oven, as if you were baking a Cake.
How to get there
Use a shovel to open the way down. Follow the short path to the bakery, there're no monsters. You will soon find yourself at the Christmas Bakery.