According to a post from the company on X, formerly Twitter, other options include Milk Chocolate Chip, Sticky Bun, Confetti Milkshake, Pink Velvet Cake Cookie and the new Banana Upside Down cake.
Add the egg, beating until fully combined, then briefly mix ... chocolate you use in these cookies, you could go old school and use chips, but my preference would be either to roughly chop a bar ...