Chewy Chocolate Mint Cookies

Ingredients (13)

• 1 stick unsalted butter, at room temperature
• 3/4 cup brown sugar
• 1/2 cup sugar
• 1 egg
• 1 egg yolk
• 1 teaspoon vanilla extract
• 3/4 teaspoon baking soda
• 1 teaspoon baking powder
• 3/4 teaspoon salt
• 2 cups and 1/4 cup all purpose flour
• 2 teaspooons unsweetened cocoa powder
• 2 cups Andes mint baking chips or chopped Andes mints (I recommend a mixture of both)
• About 2 Tablespoons milk