In a pan with a light-colored bottom (so that you can see the color of the butter) brown butter over medium heat. As the butter starts to melt it will begin to foam. Swirl the pot frequently... The process will progress rather quickly, so stay by the stove. Burnt Butter = BAD

Once it's brown and you can smell the nutty aroma, transfer to a heatproof bowl or your mixing bowl to cool

Once cool, beat in your large mixing bowl until creamy/frothy.

Add sugar, milk, and vanilla and mix to combine

Combine flour, salt, baking powder and rosemary in a separate bowl and mix well

Add flour mixture and nuts to butter mixture and blend to combine. the will be crumbly but will hold together when pinched.

Dump your dough onto a clean working surface and, with your hands, form into 2 1" diameter logs.

Refrigerate for at least one hour

When ready to bake your cookies, preheat oven to 350'F

Slice cookies into 1/4" rounds and place 2 inches apart on a parchment/Silpat lined cookie sheet

Sprinkle with coarse sugar and bake for 15 minutes, rotating sheet halfway through to ensure even cooking.