Start your campfire or heat up your grill so that your heat source is ready. If using wood or charcoal, let the flames die out prior to cooking your food.
We like to swirl a little oil in the bottom of our cast iron prior to beginning. If we are using a tin foil dish, we would spray it with cooking spray.
Place a layer of chips, trying to cover every inch so you can’t see the skillet base at all.
Scatter one cup of cheese over the chips.
Distribute one third of your toppings over the cheese.
Proceed with a second layer of chips, cheese, and toppings.
If you have room, go for a third layer of everything.
Spray a sheet of aluminum foil with cooking spray and place sprayed side down over your nachos. You want an oven effect, and you don’t want your foil to stick to your melted cheese.
Place skillet on a grate over your coals and allow everything to cook through.
Cook until cheese is melted, maybe 15 minutes depending on how hot your fire is. Check every five minutes or so, starting at ten.