Description
An outrageously fun and indulgent cheeseburger fondue that transforms juicy smashed burgers and caramelized onions into a dunkable experience with molten, savory cheese sauce. Perfect for sharing and guaranteed to impress.
Ingredients
2 lbs ground beef (90/10)
2 cups thinly sliced onions
1 tablespoon kosher salt
1 tablespoon black pepper
1 tablespoon garlic powder
8–10 slices American cheese
1/2 cup mayonnaise
Burger buns
2 tablespoons unsalted butter
2 tablespoons all-purpose flour
1 cup whole milk
1 cup shredded Jack cheese
1 teaspoon Dijon mustard
1 teaspoon cayenne powder
Kosher salt, to taste
Instructions
- Preheat grill to medium heat (about 350°F) and place a skillet over direct heat.
- Add butter, flour, and cayenne to the skillet, stirring for 1–2 minutes until smooth.
- Slowly whisk in milk until thickened, then stir in Dijon mustard.
- Add shredded Jack cheese and stir until melted and smooth. Adjust thickness with extra milk if needed. Remove from heat and keep warm.
- Increase grill heat to high (about 400°F).
- Portion ground beef into 1/4-pound balls and refrigerate until ready to cook.
- Heat a cast iron skillet or plancha until lightly smoking.
- Place a beef ball on the skillet, top with sliced onions, cover with parchment, and smash firmly.
- Season with salt, pepper, and garlic powder. Cook 1–2 minutes.
- Flip, season the other side, top with American cheese, and cook another 1–2 minutes until melted.
- Repeat with remaining patties.
- Toast buns and spread mayonnaise on the bottom.
- Add one or two patties, more mayo if desired, and top bun. Slice burgers in half.
- Heat cheese sauce in a very hot skillet.
- Place burger halves cut-side down directly into the cheese sauce and serve immediately.
Notes
Smashing the burgers creates maximum crust and flavor.
Keep cheese sauce warm on low heat to prevent breaking.
Serve immediately for best texture and melt.
Great with fries or extra buns for dipping.
Adjust cayenne to control heat level.
Nutrition
- Serving Size: 1 serving
- Calories: 980
- Sugar: 6 g
- Sodium: 960 mg
- Fat: 68 g
- Saturated Fat: 32 g
- Unsaturated Fat: 32 g
- Trans Fat: 1 g
- Carbohydrates: 38 g
- Fiber: 2 g
- Protein: 55 g
- Cholesterol: 235 mg
