Grandpa's Favorite Candy Bar Cookies

2 cups
½ tsp. baking soda
½ tsp. salt
12 tbsp. unsalted butter, softened
1 cup packed brown sugar
½ cup granulated sugar
1 large egg plus 1 egg yolk
2 tsp. vanilla extract
2 cups coarsely chopped Twix bars

1. Preheat oven 325f.
2. Whisk together the flour, baking soda and salt in a medium bowl; set aside.
3. In a separate bowl, cream together the butter and sugars. Beat in egg, yolk, and vanilla until combined.
4. Slowly add the dry ingredients to the wet ingredients. Gently stir in the Twix chunks.
5. Roll the dough into balls and bake on a baking sheet for 15-18 minutes.
6. Allow the cookies to cool for ten minutes before removing them off the baking sheet.