You can buy a box of low-fat macaroni and cheese made with powdered nonsense. I'm not worried if I'm using four different cheeses and it's high in fat. It's real food. That's what's more important.
I've been experimenting more and more with LN2 liquid nitrogen. I've used it in battle on 'Iron Chef America ' but have also made some great ice creams at home for my family. Since it freezes basically on contact you can have ice cream ready in mere minutes.