I was talked out of using bourbon and went with amaretto instead.  Everyone was  right amaretto was the better choice.

Dries
2 cups all purpose flour
3/4  teaspoon salt
1/2 teaspoon baking powder

Wets
2 sticks unsalted butter
1 3/4 cups brown sugar
2 eggs plus one egg yolks
2 teaspoons vanilla
2 teaspoons bourbon

8 oz butterscotch morsels
4 oz white chocolate morsels

Melt butter on medium low until milk solids foam and brown and becomes an amber color refrigerate for 1 hour or until firm

In bowl one mix dry ingredients flour salt and baking powder

In bowl 2 cream butter and sugar until light with beaters
Add eggs one at a time
Add vanilla and bourbon

Add dry ingredients in thirds

Add chips stir.

Preheat oven to 350 degrees

Place in a greased 8 x 8 baking dish

Bake for 35 to 40 minutes at 350 or until toothpick come out clean