July 9, 2026 · 10 min

Crispy Smashed Cheddar Burgers with Old Bay Fries and Caramelized Onions

Side Dish10 min2903 cal / serving

Get ready for the ultimate burger night with these crispy smashed cheddar burgers. The secret to their incredible texture is pressing balls of ground beef into super-thin patties in a hot pan, creating those irresistible crispy, craggy edges. Topped with melted white cheddar, sweet caramelized onions and a homemade special sauce, these burgers are sandwiched between soft potato buns.

On the side, enjoy crispy potato wedges seasoned with Old Bay-perfect for dipping in extra special sauce. This recipe is all about big flavors and satisfying crunch, guaranteed to impress your family or guests.

Recipe details

Side Dish10 min2903 cal / serving2 servings

Nutrition per serving

Calories2903 kcalProtein37.8 gFat257.6 gCarbs112.1 gSugar76.4 gFiber3.9 gSodium1841 mg

Dietary labels

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

Allergen check

Gluten / wheat: containsMilk / dairy: containsEgg: containsFish: not detectedShellfish: not detectedPeanut: not detectedTree nuts: not detectedSoy: containsSesame: not detectedMustard: containsCelery: 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

Potatoesounce PotatoesView ingredient guide
Onion1 unit OnionView ingredient guide
White Cheddar Cheese0.5 cup White Cheddar CheeseView ingredient guide
Asparagus6 ounce AsparagusView ingredient guide
Ground Beef10 ounce Ground BeefView ingredient guide
Ketchup1 unit KetchupView ingredient guide
Mayonnaise2 tablespoon MayonnaiseView ingredient guide
Potato Buns2 unit Potato BunsView ingredient guide
Dijon Mustard2 teaspoon Dijon MustardView ingredient guide
Black Pepperteaspoon (tsp) Black PepperView ingredient guide
Sugar1 teaspoon (tsp) SugarView ingredient guide
Cooking Oil4 teaspoon (tsp) Cooking OilView ingredient guide
Saltteaspoon (tsp) SaltView ingredient guide

Instructions

  1. Adjust rack to top position and preheat oven to 425°F. Wash and dry produce. Cut potatoes into ½-inch-thick wedges. Halve, peel and thinly slice onion.
  2. Toss potatoes on a baking sheet with a drizzle of oil and half the Old Bay Seasoning. Season lightly with salt and pepper. Roast on top rack until browned and crispy, 20-25 minutes.
  3. While potatoes roast, heat a large drizzle of oil in a medium nonstick pan over medium-high heat. Add onion; cook, stirring occasionally, until browned and softened, 8-10 minutes. Add 1 tsp sugar and a splash of water; cook until caramelized and jammy, 2-3 minutes more. Season with salt and pepper. Transfer to a small bowl.
  4. Meanwhile, in a second small bowl, combine mayonnaise, ketchup, mustard and remaining Old Bay Seasoning to taste. Set aside. Form beef into two equal-size balls; season all over with salt and pepper.
  5. Heat a drizzle of oil in the same pan over medium-high heat. Once hot, add beef balls. Firmly flatten each with a spatula to create very thin patties. Cook 3-4 minutes per side. In the last 1-2 minutes, top patties with cheddar; cover pan to melt cheese. Remove from heat.
  6. While patties cook, halve and toast buns. Divide buns between plates and fill with patties, caramelized onion and half the special sauce. Serve burgers with Old Bay fries on the side and remaining special sauce for dipping.

Recipe Tips

For extra crispy edges, make sure the pan is hot before adding the beef and press firmly with a spatula.

Don’t worry if the patties aren’t perfectly round-the irregular edges become deliciously crispy.

No need to season the fries generously; Old Bay already contains salt and pepper.

FAQ

Can I use a different cheese?

Yes, you can substitute white cheddar with any good melting cheese like provolone, Monterey Jack or American cheese.

Can I make the special sauce ahead?

Absolutely! The sauce can be made up to 3 days in advance and stored in the refrigerator.

What if I don't have Old Bay seasoning?

You can use a mix of paprika, celery salt, black pepper and cayenne pepper as a substitute.

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