Chocolate Cookies

Chocolate Cookies:

1/2 cup (113 grams) unsalted butter, room temperature

1/2 cup (105 grams) light brown sugar

1/4 cup (50 grams) white granulated sugar

1 large egg

1 teaspoon pure vanilla extract

1 cup (130 grams) all purpose flour

1/4 cup (30 grams) Dutch-processed cocoa powder

1/2 teaspoon baking powder

1/8 teaspoon salt

1 1/2 cups (260 grams) white chocolate chips or chunks.