I'm a Facebook fan of "The Kitchn" website and this summer when the zucchini was coming faster than we could eat it, this recipe popped up. It looked interesting and pretty healthy so I decided to try it. We loved it, so even now I'll buy zucchini to make it. It does require standing over the stove for 15 or 20 minutes. I rarely have shallots in the house, so I substitute red onion and also add the garlic. It's great on bread, crackers and even other veggies and keeps for a long time in the fridge.
You can find the recipe here and take a look at the site if you feel inclined: