These French Onion Soup Burgers take everything people love about a classic burger and elevate it with the rich, savory flavors of French onion soup. Juicy beef patties are paired with sweet caramelized onions, melty Provolone or Gruyère cheese, and served on an onion bun for a combination that’s impossible to resist.
Every layer works together to build flavor. The deeply caramelized onions add sweetness and richness, while the melted cheese brings a creamy, savory finish that perfectly complements the beef. Served on an onion bun, these burgers deliver French onion flavor in every bite.
What makes these burgers especially memorable is the addition of French onion soup mix directly into the patties. While the caramelized onions and cheese provide the familiar French onion soup experience, a small amount of soup mix adds another layer of savory depth that takes the flavor even further.
The result is a burger that’s hearty, comforting, and packed with bold flavor. It’s the kind of recipe that quickly earns a place among favorite comfort food recipes, whether served for a casual family dinner, weekend cookout, or backyard gathering.
Finished with plenty of caramelized onions and gooey melted cheese, these French Onion Soup Burgers deliver all the cozy, savory flavors of the classic soup in a satisfying handheld form that’s sure to leave everyone wanting another bite.
French Onion Soup Burgers
These French Onion Soup Burgers take everything people love about a classic burger and elevate it with the rich, savory flavors of French onion soup. Juicy beef patties are paired with sweet caramelized onions, melty Provolone or Gruyère cheese, and served on an onion bun for a combination that's impossible to resist.
Ingredients
- 1 1/2 pounds ground beef
- 1 packet or about 4 to 6 tablespoons Lipton Onion Soup Mix
- 2 1/2 tablespoons butter
- 2 large onions, thinly sliced
- a pinch of thyme
- water as needed, about a 3/4 cup
- 1 tablespoon brandy or Sherry (optional, but recommended)
- 4 to 8 ounces Swiss or Provolone cheese
- 4 buns and a little butter or oil to brush them with
Instructions
- Combine the ground beef and onion soup mix in a bowl. Mix gently until combined, then set aside while preparing the onions.
- Melt the butter in a skillet over medium heat. Add the sliced onions, thyme, and about 1/4 cup of water. Cover and cook for 3–4 minutes, or until the onions have softened and most of the water has evaporated. Check occasionally to ensure the pan does not dry out too quickly.
- Remove the lid and continue cooking the onions, stirring frequently. If they begin to stick or brown unevenly, add a small splash of water as needed. Cook until the onions are soft, deeply golden, and caramelized. Stir in the brandy or sherry, if using, then remove from the heat.
- Shape the beef mixture into burger patties. Press a shallow indentation into the center of each patty to help them cook evenly and maintain a flat shape.
- Cook the burgers in a hot skillet or on a grill over medium-high heat. Cook for about 3 minutes on the first side.
- Flip the burgers and top each one with a spoonful of caramelized onions and 1–2 slices of cheese. Reduce the heat to medium and continue cooking for 2–4 minutes, or until the burgers reach your desired level of doneness. Cover briefly, if needed, to help melt the cheese.
- While the burgers finish cooking, brush the cut sides of the buns with butter or oil and toast them in a skillet or on the grill until lightly golden.
- Assemble the burgers on the toasted buns and serve immediately.
Recipe Notes:
Burger Doneness Guide
Rare: 125°F — Warm center with a deep red color and very tender texture.
Medium-Rare: 135°F — Warm, juicy center with a bright pink-red color.
Medium: 145°F — Pink center with a juicy, slightly firm texture.
Medium-Well: 155°F — Mostly cooked through with just a hint of pink.
Well-Done: 160°F — Fully cooked with no pink remaining.
Serving Size Adjustment
For each burger, use:
- 6 ounces ground beef
- 1 to 1½ tablespoons onion soup mix
- 2 teaspoons butter
- 1/2 large onion, thinly sliced
- A small pinch of thyme
- Water, as needed
- 1/2 teaspoon brandy or sherry (optional)
- 1–2 ounces Gruyère, Swiss, or Provolone cheese
- 1 burger bun, lightly brushed with butter or oil before toasting
For a juicy burger with a slight pink center, aim for an internal temperature of around 143°F.
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