Chef John's Rosemary Shortbread Cookies
The bake time given is just a guide. It depends on the shape and thickness of your cookies, so be sure to start checking them at around 40 to 45 minutes. You can pull them as soon as they turn golden, but that depends on how mild a flavor you want.
The magazine version of this recipe uses 1 tablespoon fresh rosemary, 1 teaspoon salt, and 1/2 teaspoon vanilla extract.