Double Chocolate Cookies | Rachel's | Umami

Ingredients

• 1/2 cup butter
• 1/2 cup brown sugar
• 1 teaspoon vanilla extract
• 1 egg
• 1 1/3 cup all-purpose flour
• 1/3 cup unsweetened baking cocoa
• 1/2 teaspoon baking soda
• 1/2 teaspoon kosher salt
• 1/2 cup mini dark chocolate chips