For cold weather camping, I use layers of gloves. I have a pair of thin Smartwool gloves that I use around camp--they are thin enough that I can handle my stove and other cooking chores without taking them off. Being wool, I can use them to handle a hot pot without their melting. Far, far, better than chilled hands which are hard to warm up.

Second layer is a pair of lightweight fleece mittens--warm, breathable and fast-drying. Third layer is a pair of Mountain Laurel Designs eVent rain mitts. I've never been in a situation in which I've needed more, although if you are in an area that gets below zero you will undoubtedly need heavier mittens--or another pair--for the middle layer.

I've found that the separate layers are far easier to dry out when they inevitably get wet.