Keep it very simple, that's usually the easiest and turns out the best.
1 spanish onion (or yellow onion)
4 gloves garlic
2 carrots
2 stalks of celery
2 28oz cans of San Marzano crushed tomatoes
Olive Oil (not EVOO)
Fresh Basil
Barilla Pasta
Chop the onion and celery fairly small
Peel the carrots and grate them using a small grater or micro planer (this will give your sauce nice sweetness)
Smash and finely chop the garlic
Heat the olive oil, and then sautee onions, carrots, and celery. Once they are almost done, add the chopped garlic and let it sautee but don't let it burn.
Once everything is sauteed, and a little brown around the edges, add the two cans of tomatoes, and let simmer for a couple hours if you can. Chop the basil and add it to the sauce about 10 minutes before you plan to serve it.
Serve with Barilla pasta (the Italian Olympic team eats it, so if it's good enough for them...)
One addition you can make, if you and your guests like wine, you can add a cup of red (or white if you want more sweetness) wine to the veggies, and let reduce for a few minutes before adding the tomatoes.