Patty Melts with Charred Onions

Ingredients

• 12 slices rye bread
• and freshly ground pepper
• Kosher salt
• 1 pound ground chuck
• 2 sweet onions
• 6 slices good-quality Swiss cheese such as Gruyère or Comté
• 1 pound ground sirloin
• + 1 more ingredients
• • 6 tablespoons unsalted butter

1. Prepare a charcoal or gas grill for direct grilling over high heat. Brush and oil the grill grate. 2. In a large bowl, using a spoon, not your hands, gently mix together the chuck and sirloin. Run your hands under cold water and divide the mixture into 6 equal portions. Shape each portion into...

View full recipe at Epicurious