Kidney Beans
Kidney beans (more aptly named "red beans") haven't been flying off the shelves like their fellow legume brethren. We're guessing that people haven't gotten into these beans because of their name. Y'all are missing out big time. Just buy a bunch of these and make some chili. It'll be good for ya.
Cauliflower Mac and Cheese
You can have cauliflower and cheese, you can have mac and cheese, but you cannot have mac and cauliflower and cheese. Veggie based pasta alternatives are starting to catch on. But when you make a pasta-based pasta alternative out of the veggie, you lose a lot of people in the mix.