"Shortbread dough" refers to a type of cookie dough that is used to make shortbread cookies. It contains ingredients like butter, sugar, and flour, resulting in a crumbly and buttery texture. Full definition
And I'm guessing you don't have to bake them all in one go so there will always be a stash of shortbread dough in the freezer ready to go when the urge strikes... (willfrolicforfood.com)
Take a scant 1 tablespoon of shortbread dough (about 15 grams) and place in the center of each muffin tin. (joyofbaking.com)