I was allowed refried beans as soon as I could have pureed foods, but all doctors and dieticians have different guidelines, so check with yours.
One of my favorite recipes for the pureed stage is ricotta cheese, topped with marinara sauce and a little grated parmesan cheese. Just nuke it for a few minutes.
While you're stuck with liquids, the best you can do, I think, is a variety of protein shakes. My favorite is eight ounces of skim milk, a scoop of vanilla protein powder, a packet of general foods international vanilla latte mix on the go, and a few ice cubes. You can find a bunch of good protein shake recipes on this blog:
theworldaccordingtoeggface.
Kelly