French Onion Patty Melt: A Savory Twist on a Classic Sandwich

Take your taste buds on a flavorful journey with our French Onion Patty Melt, a delicious twist on the classic patty melt. This indulgent sandwich combines perfectly seasoned ground beef patties with caramelized onions, gooey Gruyere cheese, and a zesty aioli spread. Nestled between slices of Texas toast and grilled to golden perfection, this patty melt is a savory delight that will satisfy your cravings for a hearty and satisfying meal. Follow our easy-to-follow instructions to create this mouthwatering dish in the comfort of your own kitchen.

Ingredients: For the French Onion Patty Melt, gather the following ingredients:

Patty Melt:

  • 3 tablespoons butter
  • 3 yellow onions, sliced thin
  • 2 pounds ground beef
  • 1 tablespoon ketchup
  • ½ teaspoon garlic powder
  • 1 teaspoon salt
  • ½ teaspoon pepper
  • 2 cups Gruyere cheese, shredded
  • 12 slices Texas toast
  • 8 teaspoons mayonnaise

Aioli Spread:

  • 1/3 cup mayonnaise
  • 1 tablespoon lemon juice
  • 1 teaspoon pepper
  • 1 tablespoon (about 3 cloves) garlic, minced
  • 1 teaspoon fresh parsley
  • 1 tablespoon ketchup


  1. In a medium skillet over medium-low heat, melt butter. Add thinly sliced onions and cook until caramelized (approximately 15-20 minutes), stirring often. Add water as needed to prevent burning. Remove caramelized onions from the skillet and tent to keep warm.
  2. In a large bowl, mix ground beef, garlic powder, salt, and pepper. Form 8 square patties, slightly larger than the size of the bread and about ¼ inch thick.
  3. Wipe out the skillet and set the heat to medium-high. Cook the hamburger patties in batches (two at a time) for 1-2 minutes per side. Remove patties from the skillet and set aside.
  4. Toast 4 pieces of Texas toast and set aside.
  5. In a small bowl, combine mayonnaise, lemon juice, pepper, minced garlic, fresh parsley, and ketchup to create the aioli spread.
  6. Assemble the patty melts by topping 4 untoasted slices of bread with cheese, a hamburger patty, caramelized onions, a slice of toast spread with aioli on both sides, more cheese, a second beef patty, additional onions, and finally, top with another slice of bread. Spread 1 teaspoon of mayonnaise on the top.
  7. Wipe out the skillet and set the heat to medium. Add sandwiches to the pan, mayo side down. Place a weighted pan on top to firmly press the sandwich. Cook until golden brown (approximately 3 minutes). Remove the weighted pan, spread 1 teaspoon of mayo on the top slice of bread, and flip carefully. Cook for an additional 3 minutes or until golden brown.
  8. Serve the French Onion Patty Melt warm and enjoy the delicious combination of savory beef, caramelized onions, and melted cheese with a zesty aioli kick.

Conclusion: With its rich flavors and satisfying layers, the French Onion Patty Melt is a standout sandwich that will please your palate. The blend of caramelized onions, seasoned beef patties, and Gruyere cheese, paired with the zesty aioli spread, creates a harmonious and indulgent combination. Perfectly grilled between slices of Texas toast, this patty melt is a comfort food classic that you can easily recreate at home. Savor each bite of this hearty and flavorful sandwich, and delight in the culinary experience of the French Onion Patty Melt.

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