Retro Burgers
topBannerName Desktop
topBannerName Tablet
topBannerName Mobile
Retro Burgers

Retro Burgers

with Caramelized Onions and Roasted Sweet Potatoes

Caramelized onions, cheddar cheese, toasty buns and perfectly packed patties; this burger comes together quickly and will make your weeknight dinner a delicious event!


Produced in a facility that processes milk, sesame, eggs, fish, shellfish, crustaceans, mustard, tree nuts, peanuts, wheat, soybean and sulphites.

Preparation Time30 minutes
Cooking Time


serving amount

250 g

Ground Beef

2 tbsp

Whole Grain Mustard

(Contains Mustard)

2 unit

Garlic, cloves

¼ cup

Cheddar Cheese, shredded

(Contains Milk)

2 tbsp


(Contains Egg, Mustard)

2 unit

Artisan Bun

(Contains Soy, Wheat, Milk)

113 g

Yellow Onion

340 g

Sweet Potato

1 tbsp

Balsamic Vinegar

(Contains Sulphites)

2 tbsp

Italian Breadcrumbs

(Contains Milk, Sesame, Soy, Gluten)

Not included in your delivery

1 tsp


2.5 tbsp


0.38 tsp


0.31 tsp



Nutrition Values

Calories990 kcal
Fat53 g
Saturated Fat14 g
Carbohydrate89 g
Sugar16 g
Dietary Fiber8 g
Protein40 g
Cholesterol100 mg
Sodium1370 mg
Due to the different suppliers we purchase our products from, nutritional facts per meal can vary from the website to what is received in the delivered box, depending on your region.


Baking Sheet
Parchment Paper
Measuring Spoons
Large Non-Stick Pan
Small Bowl
Medium Bowl


Roast sweet potato wedges

Before starting, preheat the oven to 450°F. Wash and dry all produce. Cut sweet potatoes into 1/4-inch wedges. Add sweet potatoes and 1 tbsp oil to a parchment-lined baking sheet. (NOTE: For 4 ppl, use 2 baking sheets, with 1 tbsp oil per sheet.) Season with salt and pepper, then toss to coat. Roast in the middle of the oven, flipping halfway through, until golden-brown, 20-22 min. (NOTE: For 4 ppl, roast in the middle and bottom of the oven, rotating sheets halfway through.)

Caramelize onions

Meanwhile, peel, then cut onion into 1/4-inch slices. Heat a large non-stick pan over medium heat. When hot, add 1 tbsp oil (dbl for 4 ppl), then onions. Cook, stirring occasionally, until slightly softened, 3-4 min. Add 1 tsp sugar (dbl for 4 ppl) and season with salt. Cook, stirring occasionally, until dark golden-brown, 5-6 min. Remove the pan from heat. Add vinegar. Stir until absorbed, 1 min. Transfer onions to a small bowl. Carefully wipe the pan clean.

Make patties

Meanwhile, peel, then mince or grate garlic. Combine beef, breadcrumbs, garlic, half the mustard, 1/4 tsp salt and 1/4 tsp pepper (dbl both for 4 ppl) in a medium bowl. (TIP: If you prefer a firmer patty, add an egg to the mixture!) Form mixture into two 4-inch-wide patties (4 patties for 4 ppl).

Cook patties

Heat the same pan (from step 2) over medium. When hot, add 1/2 tbsp oil (dbl for 4 ppl), then patties. (NOTE: Don't overcrowd the pan; cook patties in 2 batches if needed.) Pan-fry until cooked through, 4-5 min per side.**

Toast buns

Meanwhile, halve buns. Arrange on an unlined baking sheet, cut-side up. Sprinkle cheese over bottom buns. Toast in the top of the oven until cheese is melted and top buns are golden, 2-3 min. (TIP: Keep an eye on buns so they don't burn!)

Finish and serve

Stir together mayo and remaining mustard in another small bowl. Spread mayo-mustard on top buns. Stack patties and caramelized onions on bottom buns. Close with top buns. Divide burgers and sweet potato wedges between plates.