Single Serve Double Chocolate Cookie

This single serve double chocolate chip cookie is just for you! This recipe makes the perfect small batch double chocolate cookies so you’d don’t need to share any cookies with anyone else!
Ingredients:
2 Tablespoons unsalted butter, softened
4 tablespoons brown sugar
1 egg yolk
1/4 teaspoon vanilla extract
1 1/2 Tablespoons Dutch processed cocoa powder
1/8 teaspoon baking soda
1/8 teaspoon salt
4 Tablespoons all purpose flour
3 Tablespoons semisweet chocolate chips