Mushroom Grilled Cheese Recipe

Ingredients

• 2 tablespoons olive oil
• 8 tablespoons butter, softened, divided
• 4 large portobello mushroom caps, gills removed and sliced
• 1/8 teaspoon salt
• 1/8 teaspoon pepper
• 3 tablespoons mayonnaise
• 3 tablespoons finely shredded Manchego or Parmesan cheese
• 1/8 teaspoon onion powder
• 8 slices sourdough bread
• 4 ounces Brie cheese, rind removed and sliced
• 1/2 cup shredded sharp white cheddar cheese
• 1/2 cup shredded Monterey Jack cheese
• 1/2 cup shredded Gruyere cheese
• 2 teaspoons minced fresh thyme