Just having it for lunch, hence only posting feedback now.
First thing is, it's a meat that takes forever and a day to cook. When I did the pork cheeks in the slow cooker they took 8 hours and for some reason I was expecting the ox cheeks to be the same. I put them on in the morning but 8 hours later they were still quite tough. So I googled them (as you do and I should have done first) and read that for the size the ox cheeks were that I had (I had three cheeks at 400gr each - so a fair size) I needed to allow about 12 hours. I was going out that evening anyway so I just left them to do their thing and by the time I came home they'd been in the slow cooker for about 13 hours in total - but those 13 hours resulted in butter soft, fall apart meat and something I'll definitely do again. Esp now that I know they need time
I do want to work on the flavouring of my slow cooked meats a bit though. I tried to put a slight Italian twist on it this time, using a tin and a half of tomatoes, 1/2 tin red wine and 1/2 tin stock and some Italian herbs but it probably could have done with a bit of tomato purée as well and more garlic and herbs. There was also quite a bit of liquid when it was all done and I should have reduced it more than I did, but it was close to midnight and I wasn't in the mood . But thankfully by the time you shredded the meat a bit to give it it's ragu look it was OK
I also think the recipe I used for the oxtail would be perfect for the ox cheek as well (which was the leek / celery / carrot - typical stew type combo) and I may try that next.
But definitely very worth a go if you don't mind the time it takes to cook