I’m not even going to bother to write a pattern, this one is so simple. Use a K hook and basically any bulky weight yarn. Chain 60 and join, try not to twist, but if you do ..hey! it’s a mobius.

Slip stitch in the first stitch, sc in second stitch, hdc in 3rd stitch, dc in stitch 4 ..and dc around and around and around until the cowl is about 10 inches long or you are nearly out of yarn. Then hdc in 3rd to the last stitch, sc in 2nd to the last stitch, slip in the last stitch. Weave in your ends .