French Onion Patty Melt


Indulge in the delectable French Onion Patty Melt, a mouthwatering sandwich that’s bursting with flavor. This savory delight combines caramelized onions, juicy hamburger patties, Gruyere cheese, and a zesty aioli spread, all sandwiched between slices of toasted Texas toast. If you’re craving a hearty, satisfying meal, this patty melt is sure to hit the spot.



To make this delicious patty melt, you’ll need the following ingredients:

Patty Melt:

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

Aioli Spread:

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


Let’s create this flavorful French Onion Patty Melt step by step:


1. Caramelize the Onions

  • In a medium skillet, melt 3 tablespoons of butter over medium-low heat.
  • Add the thinly sliced yellow onions and cook until they caramelize, stirring often. This should take about 15-20 minutes. Add water as needed to prevent burning. Remove the caramelized onions from the skillet and tent to keep them warm.

2. Prepare the Hamburger Patties

  • In a large bowl, mix together the ground beef, garlic powder, salt, and pepper.
  • Form 8 square patties, each about 1/4 inch thick.

3. Cook the Patties

  • Wipe out the skillet and set the heat to medium-high.
  • Add the hamburger patties in batches (two at a time) and cook for 1-2 minutes per side. Remove the patties from the skillet and set them aside.

4. Toast the Bread

  • Toast 4 slices of Texas toast and set them aside.

5. Create the Aioli Spread

  • In a small bowl, combine the mayonnaise, lemon juice, pepper, minced garlic, fresh parsley, and ketchup to make the aioli spread.

6. Assemble the Patty Melts

  • Top 4 untoasted slices of bread with Gruyere cheese, a hamburger patty, caramelized onions, a slice of toasted bread with aioli spread on both sides, more cheese, a second beef patty, more onions, and finish with a slice of bread.
  • Spread 1 teaspoon of mayonnaise on the top slice of bread.

7. Cook the Patty Melts

  • Wipe out the skillet and set the heat to medium.
  • Add the assembled sandwiches to the pan with the mayo side down.
  • Place a weighted pan on top to press the sandwiches firmly in the pan. Cook until golden brown, which should take about 3 minutes.
  • Remove the weighted pan, spread 1 teaspoon of mayo on the top slice of bread, and flip the sandwiches carefully.
  • Cook for an additional 3 minutes, or until the sandwiches are golden brown.

8. Serve and Enjoy

  • Serve the French Onion Patty Melts while they’re warm and enjoy this flavorful delight.


The French Onion Patty Melt is a sandwich that’s sure to satisfy your craving for bold, savory flavors. The combination of caramelized onions, juicy beef patties, Gruyere cheese, and zesty aioli spread creates a taste sensation that’s perfect for lunch or dinner. Get ready to savor every bite of this delicious creation!


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