Chocolate Chip Cookie Dough Frosted Brownies

All purpose flour (2 cups)

Unsweetened cocoa powder (1/2 cup)

Baking powder (1 tsp)

Salt (1 /2 tsp)

Butter (melted, 1 cup (2 sticks))

Sugar (1 cup)

Brown sugar (1 cup)

Eggs (4)

Vanilla extract (1 tsp)

Butter (softened, 1/2 cup)

Brown sugar (1/4 cup)

Vanilla (1 tsp)

Flour (1 1/4 cup)

Milk (5 tbsp)

Chocolate chips (1 cup)