Roast veg - aubergine, courgette, pepper, red onion for 15-20 mins. Add tomatoes and mushrooms, and continue roasting for another 12 mins while you boil some pasta. Mix, and spinkle some pine nuts on top for protein.
Lentil chilli,
Veg curry
Salady things with lentils, roast squash and vegan feta.
Vegan pizza ( you can make a batch of pizza dough and freeze in portions ). DD1 is happy with roast veg and no cheese on hers, but you could use vegan cheese.
My DDs seem happy to live on some version of pasta with fridge stuff/ raw veg. They often seem to toss the pasta in oil or vegan marge then add e.g. peppers, sweet corn, avocado, spinach, cherry tomatoes, pine nuts or whatever else we have in. DD1 is vegan and DD2 veggie, they do this when DH and I fancy meat ( only once a week or so, im trying to cut down ).