Quick, Easy, Fingerless Mittens by 21cg on ravelry -- I think. I really can't remember for sure who they are by, but the free pattern includes a couple of videos which helped me a bunch! Super easy and quick! I used Noro silk garden to match my scarf and size 7 circulars. Not knitted in the round, so a seam was necessary. These are rugged, snug mitts. Fun look. And because it's Noro, the colors are fun and funky.
just a hole for the thumb
I cut the length cast on down a bit
and there's still enough to roll up cuffs if wanted