Caramelized Onions, Cabrales Blue Cheese And Wild Mushroom F Recipe

• 1 Tbsp. Unsalted butter
• 1 Tbsp. Extra virgin olive oil
• 3 x Spanish onions, sliced thinly
• 1 tsp Sugar
• 3 Tbsp. Extra virgin olive oil
• 1 lb Assorted wild mushrooms (portobello, shiitake chanterelle, porcini) Salt and freshly grnd pepper
• 1/2 c. Fresh mozzarella
• 1 c. Crumbled blue cheese
• 1 x Recipe flatbread, (see related recipe)

Directions