Brown ¼ cup of butter over medium heat until dark and fragrant (about 5 minutes).
Beat remaining butter for 30 seconds. Add sugar, brown sugar, and salt, and beat until combined. Add vanilla and browned butter and combine well.
Add flour a little at a time. Combine well and add nuts to the dough.
Divide the dough into 2-5 balls, depending on how big you want the cookies.
Flatten each ball on a greased cookie sheet, using your fingers to crimp the edges. Prick with a fork and cut each circle into 6-8 wedges, but do not separate.
Bake at 325 degrees for 15 minutes.
Recut each circle and allow to cool 5 minutes on the sheet before removing to cool completely on a rack.
Melt the chocolate and dip each cookie. Allow the chocolate to cool completely on wax paper before serving.
Recipe by Triple Chocolate Kitchen at https://triplechocolatekitchen.com/chocolate-dipped-hazelnut-shortbread/