Just be careful when shopping for San Marzanos. There are cans out there that say San Marzano and then in a tiny font underneath that say the words "Style". These are the same type of tomatoes but not grown in and imported from Italy. They are cheaper, but just not as good as the real thing.
I put some San Marzano plants in my garden this year and am getting a bumper crop. My wife made a pasta sauce with them last week that was out of this world. She just cut them into chunks and put them in a baking tray, sprinkled with a little olive oil and fresh ground black pepper. She then put them in the oven at 350 and when they looked she added some sliced garlic. I don't know how long she cooked them for, she just leaves them in until "they look done". The San Marzanos are more meaty and less juicier than other tomatoes, so if it looks to dry a splash of whit wine takes care of that.
We scooped it right out of the tray put it on top of the pasta and added some fresh basil from the garden and some Locatelli and chowed down.
You can do it with any fresh tomatoes, but the San Marzanos put it over the top
Fairly quick and super easy meal.