I don't have a recipe - but just simmer the cider with -like you mentioned - cinnamon sticks and whole cloves. Simmer it for maybe 30 minutes or so. You can also set it out all day in the crockpot if you have company coming. A teaball is nice to have and that is what I use for mine. If not - you can tie them up in an old hankie or piece of cheesecloth. For a half gallon of cider, I would use 3-4 cinnamon sticks-break them up and maybe a small palm of cloves (half teaspoon or so) I have also added red-hots candies and that makes a good flavoring.

I just googled "mulled cider" and there are lots of recipes. Here is one that sounded easy:
1 quart apple cider
3/4-1 cup lemon juice
1 cup light brown sugar, firmly packed
8 whole cloves
2 cinnamon sticks
cinnamon sticks (for garnish) (optional)