This is my quick recipe for making spaghetti sauce....
Brown some chopped white onions in some olive oil. When they've browned, throw in some chopped garlic (I use the kind that comes in a little glass jar). If you don't have chopped garlic, you can use garlic powder.
Then add 1 can of tomato sauce and 1 or 2 cans of diced tomatoes. Throw in some Italian seasoning and salt and pepper.
Let it come to a boil and then cover it and reduce the heat to simmer. It's ready to eat.
If you have more time, you might add 2/3 cup or so of any red wine. Can even be a burgundy. You just have to let it cook longer.
I like to make meatballs ahead of time and keep them in the freezer. Then I defrost them and plop them in the sauce to cook for a bit longer. Makes them even better.