June 26, 2026 · 30 min

Crispy Cheddar Frico Cheeseburgers with Caramelized Onion Jam and Roasted Broccoli

Dinner30 min814 cal / serving

Take your cheeseburger to the next level with a crispy cheddar frico-a baked cheese crisp that adds a delightful crunch. Paired with sweet caramelized onion jam, juicy tomato slices and a toasted brioche bun, this burger is a true showstopper. Serve alongside roasted broccoli for a complete meal that’s both comforting and impressive.

Making frico at home is easier than you think: just bake piles of shredded cheddar until golden and lacy. The onion jam comes together quickly with a splash of sherry vinegar and a pinch of sugar, creating a perfect balance of savory and sweet. Whether for a weeknight dinner or a backyard cookout, these burgers are sure to become a favorite.


Recipe details

Dinner30 min814 cal / serving2 servings

Nutrition per serving

Calories814 kcalProtein36.8 gFat46.3 gCarbs32.3 gSugar14.7 gFiber5.8 gSodium682 mg

Dietary labels

Gluten-free: noLactose-free: noDairy-free: no

Allergen check

Gluten / wheat: containsMilk / dairy: containsEgg: not detectedFish: not detectedShellfish: not detectedPeanut: not detectedTree nuts: not detectedSoy: not detectedSesame: not detectedMustard: not detectedCelery: not detectedSulphites: not detectedLupin: not detectedMolluscs: not detected

Values are calculated per serving from ingredient amounts and the ingredient nutrition reference per 100g. Allergen and diet labels use available ingredient metadata and name matching; always check product labels for strict diets or allergies. Some ingredient amounts or nutrition values were incomplete, so this is marked as a partial estimate.


Ingredients

Yellow Onion1 unit Yellow OnionView ingredient guide
Roma Tomato1 unit Roma TomatoView ingredient guide
Brioche Buns2 unit Brioche BunsView ingredient guide
Ground Beef10 ounce Ground BeefView ingredient guide
Broccoli Florets8 ounce Broccoli FloretsView ingredient guide
Sherry Vinegar5 teaspoon Sherry VinegarView ingredient guide
Cheddar Cheese0.5 cup Cheddar CheeseView ingredient guide
Ketchup2 tablespoon KetchupView ingredient guide
Olive Oil1 tablespoon Olive OilView ingredient guide
Sugar1 teaspoon SugarView ingredient guide
SaltSalt, to tasteView ingredient guide
PepperPepper, to tasteView ingredient guide

Instructions

  1. Preheat the oven to 425°F with racks in the middle and top positions. Wash and dry all produce. Halve, peel and thinly slice the onion. Slice the tomato into rounds. Halve the brioche buns. Form the ground beef into two patties, each slightly wider than the buns.
  2. Toss the broccoli florets on a baking sheet with a drizzle of olive oil, salt and pepper. Roast on the top rack until browned and slightly crispy, 15-20 minutes.
  3. Heat a drizzle of olive oil in a large pan over medium-high heat. Add the sliced onion and cook, stirring, until soft, 5-6 minutes. Stir in half the sherry vinegar (use all for 4 servings) and 1 teaspoon sugar (2 teaspoons for 4 servings). Simmer until the liquid is nearly evaporated, 1-2 minutes. Season with salt and pepper. Transfer the onion jam to a small bowl and wipe out the pan.
  4. Grease a second baking sheet with cooking spray or line with parchment paper. Place the shredded cheddar on the sheet in two even piles (four piles for 4 servings). Bake on the middle rack until the cheese is melted in the center and crispy at the edges, 5-7 minutes. Let cool on the sheet for about 1 minute, then transfer to a plate using a spatula to cool completely.
  5. Season the patties all over with salt and pepper. Heat a drizzle of olive oil in the same pan used for the onion jam over medium-high heat. Add the patties and cook to your desired doneness, 3-6 minutes per side. Meanwhile, place the buns cut-side up on the baking sheet used for the frico. Toast in the oven until golden, 3-4 minutes.
  6. Assemble each burger: place a patty on the bottom bun, top with onion jam, tomato slices, ketchup and a cheddar frico. Close with the top bun. Serve with the roasted broccoli on the side.

Recipe Tips

For extra crispy frico, make sure the cheese is spread into thin, even piles before baking.

If you don’t have sherry vinegar, you can substitute with apple cider vinegar or red wine vinegar.

FAQ

Can I use a different cheese for the frico?

Yes, you can use other hard cheeses like Parmesan or Gruyère, but cheddar gives a classic flavor and crisps up beautifully.

How do I store leftover onion jam?

Store the onion jam in an airtight container in the refrigerator for up to a week. Reheat gently before using.

Can I make these burgers on a grill?

Absolutely! Cook the patties on a grill over medium-high heat. The frico can be baked in the oven as directed, then added to the grilled burgers.

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