OK, that was from my phone. Let me give a longer report...
First off, I used Hunt's whole plum tomatoes. I was very happy to see that they were already largely seeded and I didn't have to worry about that. What seeds were left I got out of the liquid using a fine sieve. Yes, some seeds in the sauce, but no huge deal.
Second, they weren't kidding that 5 tablespoons of butter look weird in there. And, once they melt down, the sauce still looks kind of weird.
45 minutes wasn't, as I suspected, nearly long enough, at least not long enough to reduce the sauce to a thickness I like. I ended up going nearly double that time and it was still a bit thin. I also used a tall, narrow sauce pot, which was a mistake.
I also only had 1 small onion, compliments of the Kung Flu panic monkeys cleaning them all out. I should have added some onion powder, but I didn't.
As I suspected, 45 minutes was also not long enough to really break the tomatoes down. I ended up hitting it with my stick blender to break it up some more.
The taste....
The taste was good. I think the butter had a lot to do with that, and I'm going to use butter in my future sauces instead of olive oil. It was on the sweet side, which I kind of like in my pasta sauces, but it was VERY mild. I served it with rigatoni, broccoli, and pan fried cod. You know the taste is mild when cod overwhelms it. With straight pasta it might be OK, but if you have other ingredients in the dish it might be too mild. The broccoli? Yeah, the broccoli took its lunch money and kicked it into a mud puddle.
All in all, I want, and I really missed, the traditional flavors associated with pasta sauce -- the sweet tang of basil, the earthy pungency of garlic, the bite of oregano.
So, interesting attempt. It was easy, but for me, to make a really good pasta sauce, it needs more parts and more effort.
As posited below, I think this could be a decent pizza sauce, but I still think it would need at least some more flavor to be successful in that role, as well.