Instructions

1. Brown the butter over medium heat, stirring constantly until the butter begins to foam and turns a golden brown, emitting a nutty aroma. Make sure you only brown the butter lightly. When butter browns the liquid evaporates off which can dry out your dough. As soon as the butter starts to turn brown and smell nutty, take it off the heat to prevent any more liquid from escaping. Take butter off the heat and allow to cool.
2. In a large mixing bowl combine the cooled brown butter, brown sugar, and white sugar. Beat until mixed together. Add in the egg, egg yolk, and vanilla extract. Mix well.
3. In separate bowl mix together the flour, salt and baking soda. Mix half the dry ingredients into the wet until everything comes together. Slowly add in the remaining flour a little bit at a time, stopping if the dough starts to get too dry.* Fold in the chocolate and butterscotch chips. Do not over mix.
4. Scoop the cookie dough into 1 Tablespoon size balls and refrigerate the cookie dough for at least a half hour, or overnight.
5. When you are ready to bake the cookies, preheat the oven to 350°F and line a cookie sheet with parchment paper. Place the cookie dough balls 2 inches apart and bake or 11 minutes or until the edges are set and the centers have puffed up but are still gooey.
6. Transfer to a cooling rack to cool completely before eating. Enjoy!