Double Chocolate Crinkle Cookies - THE BLONDE WHO BAKES

Ingredients

• 1/2 cup (1 stick; 115g) unsalted butter , softened.
• 1/2 cup (100g) granulated sugar
• 1/2 cup (100g) packed light or dark brown sugar
• 1 large egg , at room temperature
• 1 teaspoon pure vanilla extract
• 1 cup (125g) all-purpose flour
• 1/2 cup + 2 Tablespoons (51g) unsweetened natural cocoa powder
• 1 teaspoon baking soda
• 1/8 teaspoon salt
• 1 cup (180g) mini or regular size semi-sweet chocolate chips