Marsala Mushroom Burgers - Sutter Home Family Vineyards

Ingredients

• 6 whole portobello mushroom caps (wiped clean, stems removed)
• 6 Tbsp. fresh minced garlic
• 3 Tbsp. fresh rosemary leaves, finely chopped
• 3 tsp. each, kosher salt & fresh ground pepper
• 3/4 c. Marsala wine
• 1-1/2 lbs. ground beef
• 6 onion slices (1/4″ thick)
• 2 Tbsp. olive oil
• 8 oz. Cambazola cheese
• 4 Tbsp. Dijon mustard
• 6 thick slices pugliese bread, lightly toasted
• 3 Tbsp. roughly chopped fresh Italian parsley