Philadelphia Burger (Bobby Flay)

Adapted from Bobby Flay's Burgers, Fries and Shakes. A very abbreviated version of this recipe appears on FoodNetwork.com as "Philly burger".

• Ready In: 30 mins
• Serves: 4

Ingredients

• 3 1⁄2 tablespoons canola oil
• 1  large Spanish onion, sliced into rings
• 1 1⁄2 lbs  ground chuck (or turkey)
•  salt
•  pepper
• 8  slices  aged provolone cheese (1/4-inch thick)
• 4  hamburger buns with sesame seeds, toasted if desired
• 2  roasted red peppers, coarsely chopped (jarred)
•  pickled hot  pepper rings
•  flat leaf parsley (to garnish) (optional)

Directions

1. Heat 2 tablespoons oil in a saute pan over medium-high heat until almost smoking.
2. Add onions and cook, stirring occasionally, until soft and light golden brown, about 20 minutes.
3. Remove and set aside.
4. Divide meat into 4 equal portions.
5. Shape each into a patty and make a depression in the center.
6. Season both sides of meat with salt and pepper.
7. Heat remaining oil over high heat until it begins to shimmer.
8. Cook burgers to desired doneness, about 4 minutes per side for medium-rare.
9. During the last minute of cooking, add cheese and cover pan.
10. Top burgers with peppers and parsley.