@thepoliticalcat In fact, mashed potatoes with a dab of butter and beef jerky is a common ultralight yet calorie-dense meal used by people hiking the AT & PCT as it's not only easy to made but also convenient to eat and doesn't make one feel "bloated"...
Finally I do wish you a swift recovery and the ability to enjoy more "solid" food and be able to eat chewy stuff again without pain or discomfort ...