A lot of people have answered your post as if it's the fact that it's baby food, rather than being spoon fed pureed regular food that he's objecting to. THat distinction is important because if he doesn't want to be fed "mush" anymore (my little girl wanted NOTHING to do with someone trying to feed her with a spoon around 1 year or so - ONLY would feed herself) then it won't help to puree your food anymore than to give her jar baby food. If that's the case you just have to serve bits of food that are soft and cut up, but not mushed. Some ideas: ripe pear, ripe avocado, well cooked pasta, cheese, tofu, banana, potato (sweet or white, baked), cheerios, small pieces of bread/roll/bagel, cut up prunes, sweet peas (this was a real favorite here) etc. Just be sure to always watch him, cut things small so he's less likely to choke and enjoy watching him move to the next stage.
Are you still pumping for him? My little one stopped nursing but I pumped so I wouldn't have to rely on formula until she was a year old. Your doctor would probably recommend you give formula until he's a year if he's stopped nursing rather than going to cow's milk.
Best of luck, sounds like you are doing just fine.