Hey Otter, I make spaghetti sauce at least once a week and my kids devour it (and invite all their friends over too!!) Try this:
1 large can crushed tomatoes
1 tbsp minced garlic or 2-3 crushed cloves
1 small tin tomato paste
1 handful brown sugar
shake some oregano, basil, marjoram, salt and pepper into the sauce
splash of wine
Feeds 4 hungry people, so adjust accordingly for more.
The keys to this recipe I have discovered the garlic and brown sugar. The sweetness appeals to nearly every palate. This is a really quick recipe to toss together. Depending on how thick your sauce is you may not need the tomato paste. I just toss it in to thicken things up quickly. If you want chunks of stuff in here, you can toss any chopped veggies in that you like. I have done onions, zucchini, peppers, mushrooms, olives, anything you like. Hope this helps.