Some simple ideas:
Cook a quick ratatouille - fry onion (chopped frozen!) in non-stick pan with fry light, add courgette, carrot or whatever takes your fancy . . . some herbs, pepper etc and serve with . . . pasta, cous cous, pork chop, whatever. It's so easy that we do this when camping.
I take my lunch to work which is usually a box of salad. To keep it interesting and easy to prepare I include pickled: onions, gherkins, chillis, cabbage, beetroot; along with tomato, celery, carrot, leaves, cucumber (whatever I have fresh in) and then to treat myself: ham wrapped around cottage cheese or philly light or quark, or smoked salmon, or boiled egg, or left over gammon, or a rollmop. So far syn free and over 1/3 superfree. I have been known to treat myself by topping with a couple of teaspoons of mango chutney, but the vinegar from the pickles makes a tasty syn free dressing.
Last summer I grew my own salad leaves and ate these with every lunch and dinner. So easy when it's on the back door step and fresh - no going mushy in the fridge!! My right hand has been in plaster for the past month, so will plant leaves again as soon as I can!
12 Speed Soup is a great starter or lunch, and can be made into a full meal by adding pasta.
I have a banana with brekky because it's easy.