June 22, 2026 · 10 min

Ultimate Smashed Burgers with Old Bay Fries and Special Sauce

Side Dish10 min1149 cal / serving

There’s something magical about a perfectly smashed burger-thin, crispy edges, juicy center and all the toppings you crave. This recipe takes it to the next level with gooey white cheddar, sweet caramelized onions and a tangy special sauce that ties everything together. And let’s not forget the side: crispy potato wedges seasoned with Old Bay for a flavorful kick.

Whether you’re cooking for a crowd or just treating yourself, these burgers are sure to impress. The key is to form the beef into balls and smash them flat in a hot pan, creating those irresistible craggy edges. Serve with the fries and extra sauce for dipping and watch everyone reach for seconds.


Recipe details

Side Dish10 min1149 cal / serving2 servings

Nutrition per serving

Calories1149 kcalProtein40 gFat71.9 gCarbs78.8 gSugar27.3 gFiber5.2 gSodium2050 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

Yellow Onion1 unit Yellow OnionView ingredient guide
Potatoes12 ounce PotatoesView ingredient guide
OLD BAY® Seasoning1 unit OLD BAY® SeasoningView ingredient guide
Mayonnaise2 tablespoon MayonnaiseView ingredient guide
Ketchup2 tablespoon KetchupView ingredient guide
Dijon Mustard2 teaspoon Dijon MustardView ingredient guide
Ground Beef10 ounce Ground BeefView ingredient guide
White Cheddar Cheese0.5 cup White Cheddar CheeseView ingredient guide
Potato Buns2 unit Potato BunsView ingredient guide
SaltSalt to tasteView ingredient guide
PepperPepper to tasteView ingredient guide
Cooking Oil4 teaspoon Cooking OilView ingredient guide
Sugar1 teaspoon SugarView ingredient guide

Instructions

  1. Preheat oven to 425°F (220°C) with a rack in the top position. Wash and dry produce. Cut potatoes into 1/2-inch-thick wedges. Halve, peel and thinly slice the onion.
  2. Toss potato wedges on a baking sheet with a drizzle of oil and half the Old Bay seasoning. Season lightly with salt and pepper. Roast on the 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 sliced onion and cook, stirring occasionally, until browned and softened, 8-10 minutes. Add 1 teaspoon 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. In another small bowl, combine mayonnaise, ketchup, mustard and remaining Old Bay seasoning to taste. Set aside. Form ground beef into 2 equal balls (4 for 4 servings); 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 until desired doneness, 3-4 minutes per side. In the last 1-2 minutes, top patties with shredded cheddar; cover pan to melt cheese. Remove from heat.
  6. While patties cook, halve and toast the potato 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 sauce for dipping.

Recipe Tips

For extra crispy fries, spread them in a single layer on the baking sheet and avoid overcrowding.

When smashing the beef patties, use a heavy spatula and press firmly to get thin, even patties with crispy edges.

If you prefer a spicier sauce, add a dash of hot sauce or extra Old Bay seasoning.

FAQ

Can I use a different type of cheese?

Yes, you can substitute white cheddar with provolone, mozzarella or your favorite melting cheese.

Can I make the fries in an air fryer?

Absolutely! Toss the potato wedges with oil and seasoning, then air fry at 400°F (200°C) for 15-20 minutes, shaking halfway through.

How do I prevent the patties from sticking to the pan?

Make sure the pan is hot before adding the beef and use enough oil. A nonstick pan also helps.

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