Usually I bake them in the oven , covering with foil will speed up the cook time.
This particular time was my first in the cast iron. I use a potato scrubber when washing because you eat the whole boat. After splitting and spooning out the seed/fibers , turn the zuk over and shave , like 1/8" off the rounded bottom so it lays flat. I sprinkle some veg. season in the bottom of the boat then add 4-5 tablespoons of uncooked rice rice . This time I used quinoa (pre soaked) Next layer your cooked ground meat. I like to mix the cooked meat into the tomato sauce first. Our sauce usually has the meat , onions , peppers, diced tomato in it already. Set it on an oiled dish/pan. I think I had the oven at 350* , low sizzled the Zuk stove top a few minutes then into the oven for about 25 minutes. Stick edge of zuk with a fork to check softness. Add cheese on top , back in the oven, turn to broil about 2 minutes.