Caramelized Onion Blue Cheese Burger Recipe

Ingredients For Caramelized Onion Blue Cheese Burger Recipe

• 0.25 inch 4 large yellow onions, sliced in rounds thick
• 2 tablespoon Butter
• 2 tablespoon Olive oil
• 1 tablespoon Brown sugar
• 1 pound Lean ground beef
• 1 teaspoon Kosher salt
• 0.5 teaspoon Freshly ground black pepper
• 0.25 inch 2 large onions, sliced in rounds
• 2 tablespoon Mayonnaise
• 2 teaspoon Dijon mustard
• 4 ounce Blue cheese, slices or crumbles
• 4 Large brioche burger buns