My favorite recipe that I make in my DO is 40 clove chicken. It is really simple to make and only requires a few ingredients. I buy a whole chicken and separate into parts.
Heat the coals and place dutch oven on to brown chicken.
After chicken is browned, place 40 +/- cloves of garlic over the chicken
Sprinkle top with parsley flakes and salt/pepper to taste.
Place lid on DO and using chart cook at 350 until done.
This smells great when cooking and always has neighbors or passers by commenting on the good smell. The garlic roasts and is great spread on crusty bread to make roasted garlic butter bread. This is foolproof and really turns out great.