Brookie Skillet Cookie

Unsalted butter, cut into cubes

Light brown sugar, packed

Granulated sugar

Unsweetened cocoa powder

Salt

Vanilla extract

Egg

All-purpose flour

Milk chocolate chips

Unsalted butter

Coconut sugar

Granulated sugar

Light brown sugar, packed

Egg

Vanilla extract

All-purpose flour

Baking powder

Baking soda

Cocoa powder

Salt

Sweetened flaked coconut

Semi-sweet chocolate chips

Milk chocolate chips

Milk chocolate chips for studding on cookie dough

Vanilla ice cream (for serving, optional)

Dulce de leche for drizzle (for serving, optional)