Blue-Rugula Burgers Recipe

Ingredients For Blue-Rugula Burgers Recipe

• 3 tablespoon Butter
• 1 tablespoon Evoo
• 2 Onions, Thinly Sliced
• Kosher salt and pepper
• 0.5 teaspoon Ground Thyme
• 1 Bay leaf
• 0.5 cup Beef Stock
• 1 tablespoon Light brown sugar
• 1 tablespoon Good quality balsamic vinegar
• 1.5 pound Ground beef chuck
• 2 Cloves Garlic, Grated Or Finely Chopped
• 2 tablespoon Worcestershire sauce
• A handful of flat leaf parsley, finely chopped
• Evoo, for drizzling
• 0.5 pound Cambozola blue cheese, thinly sliced
• 4 Brioche rolls, split and lightly toasted