French Onion Stuffed Burgers au Gratin – Game Day Grilling Series

Can you feel it? Can you smell it? There is something in the air. Football is coming back, and the Game Day Grilling Series continues to get your table set for the big game each weekend. There's nothing like enjoying the heart-stopping mayhem at home with friends and a fistful of tasty goodness. French Onion Stuffed Burgers au Gratin is those fistfuls to keep you fueled and feeling good no matter how your team is faring. These burgers explode with flavor in every bite featuring patties stuffed with sauteed onions, a creaming onion spread, and gooey cheese.

Begin by making the onion mixture, a reduction of onions, oil, salt, pepper, thyme, beef broth, and red wine until very little liquid remains. Combine a bit of this mixture with mayonnaise, Greek yogurt, Dijon mustard, fresh parsley, salt, and pepper to make the French onion spread. Make a simple mixture of ground beef, parsley, salt, and pepper, and then form into four thin patties, add a spoonful of the onion mixture, and form into thicker burger patties.  Grill over medium-high heat, and top with more onion mixture and gruyere cheese during last two minutes.  Serve on toasted buns with lettuce for an added crisp texture.  These burgers finish fragrant, dark, and tantalizing, making them the perfect game day feast for you and your friends.  

Serves 4

French Onion Stuffed Burgers au Gratin Ingredients

For the onions

  • 1 Tablespoon olive oil
  • 2 large onions halved and thinly sliced
  • 1/2 teaspoon kosher salt
  • 1/4 teaspoon pepper
  • 1/2 Tablespoon fresh thyme or 1/2 teaspoon dried thyme
  • 1/4 cup beef broth
  • 1/4 cup red wine or additional beef broth

For the French onion spread

  • 1/4 cup mayonnaise
  • 1/4 cup plain Greek yogurt
  • 2 Tablespoons of the onion mixture
  • 1 teaspoon Dijon mustard
  • 1 teaspoon minced fresh parsley or 1/4 teaspoon dried parsley
  • pinch salt and pepper to taste

For the burgers

  • 1 1/3 pounds lean ground beef
  • 1 Tablespoons minced fresh parsley or 1 teaspoon dried parsley
  • 1/2 teaspoon pepper
  • 1 teaspoon kosher salt
  • 4 oz gruyere cheese shredded, divided
  • 4 brioche buns or gluten-free buns, if needed, sliced open
  • Bibb or butter lettuce

French Onion Stuffed Burgers au Gratin Directions

For the onions

  1. Heat oil in a skillet over medium heat, add onions, salt, and pepper. Cook for 15-20 minutes, stirring frequently, or until caramelized.
  2. Add thyme, sauté for minute or two, then add the wine and beef broth.
  3. Reduce until very little liquid remains.
  4. Set aside to cool.

For the French onion spread

  1. In a small bowl, combine all of the ingredients and stir to combine. Store in the refrigerator until ready to use.

For the burgers

  1. In a bowl, combine the beef, parsley, pepper, and salt and gently mix with your hands.
  2. Divide the meat mixture into four equal pieces.
  3. Take one piece of the meat mixture and flatten into a skinny patty. Place about a tablespoon of the onions in the center of the patty and wrap the meat around the onions to form a burger, sealing as best you can. Repeat with the remaining three pieces of meat.
  4. Preheat your grill to medium-high heat. Grill for 5-6 minutes per side to the desired doneness. For the last couple minutes of grilling, divide the remaining onion mixture on top of the burgers and top each with a quarter of the Gruyere cheese.
  5. Lightly toast the buns on the grill. Place one burger on the bottom half of each bun, top with lettuce, and the French onion spread.

Taken from cupcakesandkalechips.com
https://cupcakesandkalechips.com/french-onion-soup-au-gratin-stuffed-burgers/