Sriracha Patty Melt - Love of Food

Ingredients

• 8 slices raw bacon
• 2 Tablespoons finely chopped red onions
• ½ teaspoon finely chopped fresh garlic cloves
• 1 Tablespoon and ½ teaspoon sherry wine vinegar
• ¼ teaspoon chili powder
• 1/8 teaspoon ground ginger
• 1/8 teaspoon ground mustard
• 2 ½ teaspoons maple or maple flavored pancake syrup
• 2 ¼ teaspoons light brown sugar
• 2 1/8 teaspoons sriracha hot chili sauce
• ½ cup mayonnaise
• 1 teaspoon Montreal steak seasoning
• 1/8 teaspoon Lawry's seasoned salt
• ¼ teaspoon granulated garlic
• ¼ teaspoon granulated onion
• 1 1/8 pounds (18 ounces) raw ground beef (80/20)
• 8 to 9 cremini mushrooms
• 8 slices sourdough bread
• 4 ounces thinly sliced fontina cheese
• ¼ cup butter, softened