Indulge in these soft and chewy chocolate sugar cookies that are easy to make and perfect for any occasion.
1 cup unsalted butter, softened
1 1/2 cups granulated sugar
1 large egg
1 teaspoon vanilla extract
2 cups all-purpose flour
3/4 cup unsweetened cocoa powder
1 teaspoon baking soda
1/2 teaspoon baking powder
1/2 teaspoon salt
1/4 cup granulated sugar