Preheat oven to 375F. Spray a large baking pan with olive oil.
Prepare the mushroom caps by washing and drying the mushrooms. Remove the stems. Set aside.
In a large bowl, combine the rest of the ingredients and mix well.
Stuff each mushroom cap with the stuffing mixture (you will need ~1 teaspoon to ~1 tablespoon of filling per mushroom cap, depending on the size of the mushroom). Place on the baking pan and bake at 375F for 15 minutes, or until the cheese is melted and the mushrooms are cooked. Serve warm.
If you cannot find Mimolette cheese, you can use freshly grated Parmesan, or a blend of Parmesan and another cheese, such as cheddar. Parmesan has a similar lovely nutty taste to Mimolette that works really well in this recipe.