Hot Chocolate Cookies – Rosanna Pansino

Ingredients

• 1 cup all-purpose flour
• 2/3 cup unsweetened cocoa powder
• 1 teaspoon baking soda
• 1/4 teaspoon salt
• 1/4 teaspoon espresso powder
• 1/2 cup (1 stick) unsalted butter, room temperature
• 1/2 cup granulated sugar
• 1/2 cup light brown sugar, packed
• 1 egg, room temperature
• 1 1/2 teaspoon vanilla extract
• 1 tablespoon milk
• 1 cup semi-sweet chocolate chips
• 20 large marshmallows