The Raven Scholar by Antonia Hodgson. It follows some of the coming-of-age, fight-in-a-giant-contest-to-rule tropes, but it is really well written with a protagonist I really liked. It's also refreshingly witty with a raven god and...you know, I'm not going to do it justice, but the ravens are amazing.
That does sound good!
Another recommendation for a clever, cozy riff off Arthurian legend is Greenteeth by Molly O'Neill.
I saw that one and wondered, but now I'll go back and add it to the perpetual Want to Read list I have going.