Prepare campfire for grilling over medium heat.
Heat the pan and 1 tbsp of the olive oil over the campfire coals.
2 Tbsp Olive Oil
Saute the diced onions until they are brown but not burned. If you have time I prefer to completely caramelize the onions.
2 Large Onions
In a bowl combine the cheeses, cooked onions, remaining olive oil, salt, pepper, and rice until completely mixed. It is okay to smash everything together in the bowl in this step.
1/2 cup Goat Cheese, 1/2 cup Mozzerella Cheese, 1 cup Prepared Rice, 2 Tbsp Olive Oil, 1/4 tsp Salt, 1/4 tsp Black pepper
Clean mushrooms removing the stems if still attached. Place on a flat surface and spray with the cooking oil.
4 large Portobella mushrooms, Cooking Spray
Spoon the filling mixture into the mushrooms.
Place the mushrooms, stuffed side up, directly onto the grill grate. Cook for 10 mins over the coals or until mushrooms are tender.