This authentic German Frikadellen Burger features juicy seasoned beef patties, sweet caramelized onions, crisp lettuce, and a tangy mustard sauce served on a toasted brioche bun. A hearty and flavorful German-inspired burger perfect for lunch or dinner.

Ingredients

Burger Patties

• 500 g ground beef
• 1 small onion, grated
• 1 egg
• 1/2 cup breadcrumbs
• 1 tsp paprika
• 1 tsp garlic powder
• Salt and black pepper to taste

Caramelized Onions

• 2 large onions, thinly sliced
• 1 tbsp butter
• 1 tsp brown sugar

Mustard Sauce

• 3 tbsp Dijon mustard
• 2 tbsp mayonnaise
• 1 tsp honey

Assembly

• 4 brioche burger buns
• 4 lettuce leaves
• 1 large tomato, sliced
• Pickle slices

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Instructions

Step 1

In a large bowl, combine ground beef, grated onion, egg, breadcrumbs, paprika, garlic powder, salt, and pepper.

Step 2

Mix gently until combined and shape into 4 thick patties.

Step 3

Heat a skillet over medium-high heat and cook the patties for 4–5 minutes per side until nicely browned and cooked through.

Step 4

Meanwhile, melt butter in another pan. Add sliced onions and brown sugar.

Step 5

Cook for 10–12 minutes, stirring occasionally, until the onions are soft, golden, and caramelized.

Step 6

In a small bowl, whisk together mustard, mayonnaise, and honey to make the sauce.

Step 7

Toast the brioche buns until lightly golden.

Step 8

Spread mustard sauce on both halves of each bun.

Step 9

Layer lettuce, tomato slices, pickles, the beef patty, and a generous amount of caramelized onions.

Step 10

Close the burgers and serve immediately with fries or potato wedges.

Notes

• For extra flavor, add a slice of Swiss cheese.
• Use freshly ground beef for the juiciest burger.
• The mustard-honey sauce can be made a day ahead.

Prep Time

20 minutes

Cook Time

20 minutes

Total Time

40 minutes

Servings

4 burgers