Caramelized Onion Burgers
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Caramelized Onion Burgers

Caramelized Onion Burgers

with Garlic Aioli and Baked Cauliflower 'Frites'

One of our favourites: the Caramelized Onion Burger – caramelized onions, spinach, soft brioche buns and homemade patties. Roasted cauliflower 'frites' and garlic aioli make the perfect sides.

Family Friendly

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

Preparation Time35 minutes
Cooking Time


serving amount

250 g

Ground Beef

2 unit

Garlic, cloves

285 g

Cauliflower, florets

½ cup

Panko Breadcrumbs

(Contains Wheat)

113 g

Yellow Onion

1 tbsp

Balsamic Vinegar

(Contains Sulphites)

4 tbsp


(Contains Egg, Mustard)

2 unit

Brioche Bun

(Contains Egg, Wheat)

28 g

Baby Spinach

1 tbsp

Worcestershire Sauce

Not included in your delivery

1 tsp


2 tbsp


0.38 tsp


0.13 tsp



Nutrition Values

Calories950 kcal
Fat58 g
Saturated Fat13 g
Carbohydrate71 g
Sugar18 g
Dietary Fiber6 g
Protein42 g
Cholesterol105 mg
Sodium1320 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
Measuring Spoons
Large Non-Stick Pan
Medium Bowl
Small Bowl


Roast cauliflower

Before starting, preheat the oven to 450°F. Wash and dry all produce. Garlic Guide in Step 5 (dbl for 4 ppl): 1/4 tsp mild, 1/2 tsp medium and 1 tsp extra. Cut cauliflower into bite-sized pieces. Add cauliflower and 1 tbsp oil (dbl for 4 ppl) to an unlined baking sheet. Season with salt and pepper, then toss to coat. Roast in the middle of the oven, stirring halfway through, until golden-brown, 23-25 min.

Prep and toast panko

Meanwhile, peel, then cut onion into 1/4-inch slices. Peel, then mince or grate garlic. Heat a large non-stick pan over medium heat. When hot, add half the panko to the dry pan. Cook, stirring often, until toasted, 2-3 min. Remove the pan from heat, then transfer panko to a plate. Set aside. Carefully wipe the pan clean.

Caramelize onions

Heat the same pan over medium. When hot, add 1/2 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, 3-4 min.

Make patties and finish onions

Meanwhile, add beef, remaining panko, Worcestershire sauce, half the garlic and 1/4 tsp salt (dbl for 4 ppl) to a medium bowl. (TIP: If you prefer a firmer patty, add an egg to the mixture!)Season with pepper, then combine. Form beef mixture into two 4-inch-wide patties (4 patties for 4 ppl). Set aside. When onions are done, remove the pan from heat, then stir in vinegar. Transfer onions to another plate and set aside. Carefully wipe the pan clean.

Cook patties

Heat the same pan over medium-high. When hot, add 1/2 tbsp oil (dbl for 4 ppl), then patties. Pan-fry until patties are cooked through, 3-4 min per side.**While patties cook, combine mayo and 1/4 tsp remaining garlic in a small bowl. (NOTE: Reference garlic guide.) Toss cauliflower with half the garlic aioli in another medium bowl. Sprinkle toasted panko over top, then stir to coat.

Finish and serve

Set the oven to broil. Halve buns, then arrange on another unlined baking sheet, cut-side up. Toast buns in the middle of the oven until golden, 2-3 min. (TIP: Keep an eye on buns so they don't burn!) Spread remaining garlic aioli over bottom buns, then stack with patties, caramelized onions and baby spinach. Close with top buns. Divide burgers and cauliflower 'frites' between plates.