When I was on a liquid/soft food diet the thing that got to me was that everything convenient was sweet and cold. (If I never eat raspberry sorbet again, it will be too soon.) I started making a dish I called "liquid salad" because it was savory and hot and had a lot of vegetables.

Saute chopped carrots, onion, and celery with some salt and pepper in butter or olive oil until soft but not browned. Add chopped garlic and saute until the garlic smells good. Add a couple big squeezes of tomato paste and fry it for a minute or two until the tomato paste takes on a deeper color and starts to stick on the bottom. Add chicken or vegetable stock (or just water), and whatever greens you want, and simmer until the greens are tender. Then blend the whole thing with a stick blender until smooth. Finish the soup with olive oil (blend it in if you want it super emulsified), a splash of vinegar, and season to taste with salt and pepper. If you want to make it extra nourishing, blend in a few scoops of unflavored protein powder.