A Fancy-Pants Version of the Classic Mushroom Swiss Burger

Ingredients

• 1 whole bulb of garlic
• 1 tsp olive oil
• 5 wedges spreadable Swiss cheese (I used Laughing Cow brand)
• 1/2 tsp dried parsley
• salt
• cracked black pepper
• 2 Portabella mushroom caps - sliced 1/2 inch thick
• 1/4 cup balsamic vinegar
• 1 TBSP dijon mustard
• 1 tsp fresh rosemary - super finely chopped
• 16 oz ground beef - 85/15
• 1 1/2 TBSP butter
• 1 large yellow onion - thinly sliced
• 6 slices thick-cut bacon
• 3 slices Swiss cheese
• pepper
• 3 large hamburger buns or kaiser rolls - toasted