How do you make millionaire shortbread into billionaire shortbread with a flick of the wrist? Add hazelnuts, of course! When I first went gluten free, I missed Twix bars more than I could ever explain. They are by far my favorite candy bar. I knew that the classic millionaire shortbread would be a great stand in. Shortbread covered by luxurious caramel, topped with chocolate? I’ll take 10 please! When I was researching how I wanted to make these bars, I looked at several classic recipes. So much inspiration, they all looked yummy, but all seemed a little…boring. So I wondered if I could take the classic Millionaire Shortbread and dress…