Chocolate Chip Cookie Brownies

Bahan-bahan (24 porsi)

• 1 stick salted butter (1/2 cup, very soft)
• 3/4 cup white sugar
• 2 tablespoons brown sugar, packed
• 1 egg
• 1/2 teaspoon vanilla
• 1 cup + 2 tablespoons flour
• 1/2 teaspoon baking soda
• 1/4 teaspoon salt
• 1 cup chocolate chips
• 18.9 ounce brownie mix – my all-time favorite is Ghirardelli Double Chocolate