Eggs - scrambled with cheese, boiled, poached, with mayonnaise on bread etc. are so easy and very good for LOs.
Chicken and fish in either a tomato (either cut fresh or chopped tinned) sauce, or cheese sauce. You can also cunningly sneak in some vegetables that way. I do a really simple sauce from tinned toms, chopped onion, yellow pepper and mushroom. The cheese sauce is also dead easy. Both take 5-10 mins.
Spaghetti bolognaise is another fave and you can just put aside some of one you make for yourself, providing you don't add salt.
Pasta, rice or homemade mash included for some carbs.
Fish fingers, mash and baked beans is a good one. Or bangers and mash with low salt child-friendly gravy (Boots do appropriate stock cubes).
Banana and avocado require no prep but are meals in themselves if served with some bread or toast. You can add pear, banana or mango to weetabix or porridge to make it more appealing.
I generally go on the basis that anything we eat, my 8 month old DS can eat providing very low/no salt content and cut up small enough to manage. Finger foods are also good - my DS gets it into his head sometimes that he just doesn't want me to spoon feed him and is happy to pick at finger foods. This time of year you can eat in the garden and then the mess can just be swept onto the floor for the birds!
HTH