Preheat oven to 425 degrees and line a baking sheet with foil. Set aside.
Heat olive oil in a sauté pan on medium-high heat. Add pinch of salt and pepper and sauté the mushrooms until softened and browned (about 4-5 minutes).
While the mushrooms are cooking, cut the french roll into ten 3/4 inch think slices. Then cut the brie log into 20 thin slices.
Remove mushrooms from heat and dice.
Spray the foil with cooking spray. Place french bread slices on the baking sheet. Place two slices of brie on each slice of bread. Take a palm full of diced mushrooms and sprinkle on top of each piece of bread.
Place pan in the oven for 10 minutes. Remove and serve immediately.
