When I was in the hospital (back in 2001), I got really bad sores in my mouth from one of my medicines. I couldn't stand to have solid foods in my mouth.
When I got home, my sister fed me Ensure or Slim Fast. Either one has good nutrition. You might also try Carnation Instant Breakfast. She also fed me Jello, but she mashed it up so it wasn't so wiggly (I had to be spoon fed for a while). I liked mashed potatoes and gravy, too. Most of the time, I just wasn't too interested in food, so the Ensure and Slim-fast was good since it's drinkable.
Do you have a blender? If so, you can liquefy just about any food.
You'll need to add some liquid to whatever you put in the blender, if it doesn't already have liquid.
For instance---
Chicken: add chicken broth
Beef: add beef broth
Be careful with putting hot foods and liquids in the blender. Hold the lid on tight as hot foods tend to fly out when you turn the blender on.
Do you, or can you get Meals On Wheels? That helped me a lot when I was finally able to feed myself (but still not able to cook). I don't know if they have pureed foods, but it's something you may want to have later on.
Do you have a neighbor-lady who can help you? Please, please remember that people truly love to be helpful, and don't be afraid to ask. She may be able to get you acquainted with some things in the kitchen, or help you cook meals, or both.
If you make foods ahead, don't keep anything that has been in the fridge more than three days, as a rule.
If you cook ahead, best to freeze extras.
Let us know if you need anything else. I'm going to add more in another post.
Stephanie