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Ingredients

• 2 tablespoons extra-virgin olive oil, divided
• 2 tablespoons butter
• 1 large onion, sliced
• Salt and freshly ground black pepper
• 1 tablespoon brown sugar
• Splash water
• 1/4 cup spicy brown mustard
• 1 1/2 pounds ground sirloin
• 2 cloves garlic, grated
• 3 tablespoons Worcestershire sauce, eyeball it
• A handful fresh parsley, finely chopped
• 1/2 pound Cambazola blue cheese, thinly sliced
• 4 crusty rolls, split, lightly toasted
• 2 handfuls arugula leaves, coarsely chopped

Description

Food Network Invites You To Try This Blue-rugula Burgers Recipe From Rachael Ray.

Food Network