This is becoming a staple dish for us. I use tomato (fresh or canned), Trader Joe’s French green beans (frozen), olive oil + herbs (my sub for traditional garlic) and slow cook on low (instant pot setting) overnight, then a few more hours uncovered to thicken. Just ate a version with olive oil from several jars of tuna + leftover bacon drippings–excellent!
I’d love to grow green beans for this… 
