So I've been known to make my own. I use salted butter, never the unsalted. You can pretty much find recipes anywhere on the internet and so many use granulated sugar. I will not use that type of sugar because it does not give the final product that flaky, yummy flavor. It can leave the final product rather grainy.
Instead, use powdered sugar because that will give you the flaky texture you are looking for. Furthermore, do not use anything other than butter, flour, and sugar unless you want to make pecan shortbread.
2 cups flour
2/3 cup powdered sugar.
1 cup salted butter.
1 tsp vanilla
If you want nice round disks, roll into a round log before wrapping in plastic so when its cold you can slice 1/3 inch disks, place on the cookie sheet and bake for 12 to 14 minutes at 350 degrees.
If you prefer nice rectangular strips, roll out the dough so its about a 1/2 inch thick, chill and then cut into smaller rectangular cookies. Bake at 350 for 12 to 14 minutes or till lightly browned.
If you want a slight variation, you could make these with 2 tablespoons of chai to add a spicy taste. Or you could add 1/2 cup toasted and finely chopped pecans to the dough to give a nutty flavor.
Have fun and let me know what you do to make your favorite shortbread. I've shared what I like to do. Now its your turn.