I was about to say courgettes (we're still reeling from the courgette glut of about 10 years ago when I grew 6 plants for 2 of us. DH now refuses to eat courgettes in any form!).
On a more positive note, stick some radishes in on top of whatever else you plant - they come up and are ready for harvesting miles ahead of anything else, and help you remember where your rows are.
Lettuce is pretty easy and doesn't seem to attract cabbage white caterpillars the same way that the brassicas (cabbage, cauliflower etc.) do.
Potatoes are a doddle - plant and forget, really. I've never had much success with tomatoes or cucumbers - living in the west of Ireland they tend to blow over before they stand a chance of ripening, but your area may be more forgiving.
If your soil's fairly deep and soft, carrots and parsnips are good. If stony, expect twisted, warped and generally misshapen root veg - which can be interesting.
Nasturtiums aren't something people generally think of as vegetables, but the leaves are lovely and peppery, and may help to distract the cabbage whites from your brassicas if you're brave enough to attempt them.
You've inspired me to go browse some seed catalogues!