Soups I can Puree
I'm 2 years post op, but one I like (just because I like the taste...and it's good if I'm sick and don't feel like eating):
PUMPKIN SOUP
Cut a small pumpkin in chunks (don't peel it yet...it's too hard...but scrub the skin before cutting)
boil it in some chicken broth until it's soft. Use enough broth to come up about half-way over the pumpkin. Remove the pumpkin chunks from the chicken broth, let it cool until you can handle it, and scoop the pumpkin off the skins. Return it to the broth, and puree the broth with the pumpkin. If it's too thick, add a little more broth (or some water). I've never tried it...but you could probably add a scoop of Any Whey flavorless protein powder to it and puree that in there too for a little extra protein boost. If you wanted to make it 'creamier' w/o the fat of full cream, it wouldn't hurt to add a little milk, ricotta cheese or something like that to it.
LENTIL SOUP
If you can find orange lentils (sort of like split green peas, but they're orange...I don't know if they're available in regular U.S. stores, but if you have a Middle Eastern Store near you, they'd have it), use them to make this soup:
Cook about a half cup of orange lentils in about 2-3 cups of chicken broth (salt/spice to your taste...salt/pepper/onions/garlic).
After the lentils are very soft, puree it all together.
Good luck and congrats on your surgery. My only regret with mine is that I didn't do it 20 years ago!