I think this is the one you're talking about. I've got the ingredients at home but haven't made the muffins yet. I'm going to make them using the spice cake mix. (I copied this recipe off the WW recipes section)
Recipe: Chocolate Pumpkin Muffins
1 box Devil's Food cake mix
1 -15 oz. can pumpkin
1/2 c. water
Mix together and bake according to box directions. I would suggest using a muffin pan, not cupcake holder, as they stuck to mine. Spray with cooking spray, even if your pan is non-stick.
You can use Spice cake mix for Pumpkin Spice muffins.
Makes 24 muffins at 2 points each.