INGREDIENTS
2 tbsp
butter
3
firmly packed tablespoons of dark brown sugar
kosher salt
1/4 tsp
pure vanilla extract
2 tbsp
peanut butter
1
egg yolk - discard or set aside egg white for a different use
1/4 tsp
baking soda
1/4 cup
all-purpose flour plus one additional tablespoon of flour
Whole peanuts - optional