Classic Patty Melt - Custom Distributors | Custom Distributors Appliances

Ingredients

• 4 tablespoons canola oil, divided
• 1 large yellow onion, thinly sliced (about 4 cups)
• 1 1/2 teaspoons Kosher salt, divided
• 1 1/4 pounds ground chuck
• 1/2 teaspoon black pepper
• 1/4 cup mayonnaise
• 1 tablespoon Dijon mustard
• 1 tablespoon barbecue sauce
• 1 tablespoon ketchup
• 3 ounces sharp yellow Cheddar cheese, shredded (about 3/4 cup)
• 8 (3/4 inch thick) sourdough bread slices
• 4 Swiss cheese slices
• 4 tablespoons butter, divided