Pasta Sauce: Pre-cook Veg

For veggies, here's a list of stuff I think goes good in pasta, in whatever combination:
Celery, string beans, chickpeas or other hearty beans, peas, carrots, cauliflower, onions, peppers (capsicum), hot pepper, broccoli, zucchini (yes, there are two c's. I checked). Just pick a few. It's going to taste great.

Order of cooking may make a difference for you. Some vegetable take longer to cook than others. Also, if you throw everything in at once, the juices all run out, and you end up stewing your veg. If you want them nice and crisp and fried, keep the heat pretty high, use a little oil and butter, and add one type of veggie at a time. This keeps the pan hot enough to keep your veggies from stewing. You should allow 1 or 2 minutes between each new veg you add.

Generally, the first thing you should do is chop up onions in pretty small pieces, cook that for a bit, then add garlic. After that, it doesn't matter all that much what goes in next. If you're using celery or carrots, I'd recommend adding those earlier, and if you have peppers/capsicum, save them for last.