Under the Party Tree mitts, on Ravelry. It's an expensive pattern, but oh I love it so so much.
winter mittens by beth o'callaghan (pattern: Deep in the Forest Mittens by by Tuulia Salmela)
A super simple, super fun, basic mitt pattern with an afterthought thumb…
Pretty thumb detail - Free Pattern Blue Alvarez Designs These quick mitts are just the thing - whether for yourself or for a last minute gift, they knit up fast and soft in Tilli Tomas to showcase their beautiful superwash Merino Artisan Sock yarn.