July 9, 2026 · 10 min

Smoky Mustard Turkey Burgers with White Cheddar and Crispy Onions

Side Dish10 min1122 cal / serving

There’s something about a cheeseburger that hits the spot every time. But not all cheeseburgers are created equal-this one is truly special. Juicy turkey patties are topped with melty white cheddar and two kinds of onions: sweet griddled and crispy fried, plus ripe tomato slices (optional) all on a smoky mustard-slathered pillowy brioche bun. And what burger would be complete without taters? On the side: crispy salt and pepper roasted wedges hot out of the oven.

This recipe is perfect for a weeknight dinner that feels like a treat. The combination of flavors and textures-savory turkey, tangy mustard, rich cheddar and crunchy onions-will have everyone asking for seconds. Plus, the roasted potato wedges are the ideal companion, crispy on the outside and fluffy on the inside.

Recipe details

Side Dish10 min1122 cal / serving2 servings

Nutrition per serving

Calories1122 kcalProtein40.9 gFat82.2 gCarbs53.5 gSugar18 gFiber5.8 gSodium1501 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: 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

Ground Turkey10 ounce Ground TurkeyView ingredient guide
Potatoes12 ounce PotatoesView ingredient guide
Onion1 unit OnionView ingredient guide
White Cheddar Cheese0.5 cup White Cheddar CheeseView ingredient guide
Smoky Mustard2 ounce Smoky MustardView ingredient guide
Brioche Buns2 unit Brioche BunsView ingredient guide
Crispy Fried Onions1 unit Crispy Fried OnionsView ingredient guide
Saltteaspoon (tsp) SaltView ingredient guide
Black Pepperteaspoon (tsp) Black PepperView ingredient guide

Instructions

  1. Adjust rack to top position and preheat oven to 450°F. Wash and dry produce. Slice potatoes into ½-inch-thick wedges. Toss on a baking sheet with a drizzle of oil, salt and pepper. Roast on top rack until lightly browned and tender, 20-25 minutes.
  2. Meanwhile, peel and cut onion into ¼-inch-thick rounds, keeping layers intact. Halve buns.
  3. Heat a drizzle of oil in a large pan over medium-high heat. Add onion and cook until tender and browned at the edges, 2-4 minutes per side. Season with salt and pepper. Turn off heat; transfer to a plate. Wipe out pan. Tip: The onion slices won’t brown well if they’re not in a single layer. Cook in batches if necessary.
  4. Form turkey into two patties (four patties for 4 servings), each slightly wider than a burger bun. Tip: Don’t worry if your patties aren’t perfectly round-those irregular edges will turn deliciously crispy! Season generously with salt and pepper. Heat a drizzle of oil in pan used for onion over medium-high heat. Add patties and cook to desired doneness, 3-5 minutes per side. (Careful! Oil may splatter.) In the last 1-2 minutes of cooking, top patties with cheddar and cover pan to melt.
  5. While patties cook, toast buns until golden brown. Spread as much mustard as you like onto cut sides of buns.
  6. Fill buns with griddled onion, patties and crispy fried onions. Divide burgers between plates and serve with potato wedges on the side.

Recipe Tips

For best results, cook the onion slices in a single layer to ensure even browning.

Don’t overwork the turkey patties; handle gently to keep them tender.

If you don’t have smoky mustard, you can mix regular mustard with a pinch of smoked paprika.

FAQ

Can I use ground beef instead of turkey?

Yes, you can substitute ground beef for turkey. Adjust cooking time as needed for your desired doneness.

What can I use instead of brioche buns?

Any soft burger bun or even lettuce wraps will work. For a gluten-free option, use gluten-free buns.

How do I make the potato wedges extra crispy?

Soak the potato wedges in cold water for 30 minutes before roasting, then pat dry. This removes excess starch and helps them crisp up.

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