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21 Day Aged Rump Steak & Caramelised Onion Ciabatta

21 Day Aged Rump Steak & Caramelised Onion Ciabatta

Serves 2 | with Cheddar and Roasted Garlic Mayo
4.5(15)
Recipe Development Team
Recipe Development TeamUpdated on April 02, 2026
Calories
731 kcal
Protein
48.5g protein
Total
30 minutes
Difficulty
Easy
Allergens:
  • Milk
  • Wheat
  • Barley
  • Cereals containing gluten
  • Egg
  • Mustard
  • Cereals containing gluten
  • Rye
  • May contain traces of allergens
Produced in a facility that processes eggs, milk, fish, peanuts, sesame, shellfish, soy, tree nuts, and wheat.
serving amount

2 unit(s)

21 Day Aged British Rump Steaks

1 unit(s)

Onion

3 unit(s)

Garlic Clove

60 grams

Mature Cheddar Cheese

(Contains: Milk)

2 unit(s)

Ciabatta

(Contains: Wheat, Barley, Cereals containing gluten May contain traces of: Cereals containing gluten, Rye)

64 grams

Mayonnaise

(Contains: Egg, Mustard)

20 grams

Wild Rocket

Not included in your delivery

½ tsp

Sugar

Energy (kJ)3060 kJ
Energy (kcal)731 kcal
Fat41.5 g
of which saturates16.1 g
Carbohydrate49.8 g
of which sugars7.3 g
Dietary Fibre3.9 g
Protein48.5 g
Cholesterol114 mg
Salt2.2 g
Potassium819.2 mg
Calcium54.6 mg
Iron5.1 mg
Always refer to the product label for the most accurate ingredient and allergen information.
Large Frying Pan
Bowl
Baking Tray
Pan
Aluminum Foil

Instructions

Caramelise the Onion
1

a) Preheat your oven to 220°C/200°C fan/gas mark 7. Remove the steaks from your fridge to allow them to come up to room temperature.

b) Halve, peel and thinly slice the onion. Heat a drizzle of oil in a large frying pan on medium heat. Once hot, add the onion, season with salt and pepper and fry, stirring occasionally, until golden, 10-12 mins. 

c) Meanwhile, pop the garlic (unpeeled) into a small piece of foil with a drizzle of oil and scrunch to enclose it.

Roast the Garlic
2

a) Pop the garlic parcel onto a baking tray.

b) Bake on the top shelf until the garlic has softened, 10-12 mins.

c) Once the onion has softened, add the sugar (see pantry for amount) and cook until caramelised, 1-2 mins more.

d) Once caramelised, remove the onion from the pan into a small bowl. Keep the pan for the next step.

Fry your Steaks
3

a) Add a drizzle of oil to the large frying pan and return to high heat. Season the steaks with salt and pepper. TIP: Rump steaks naturally vary in shape, so adjust the following timings depending on how you like yours cooked.

b) Once very hot, lay the steaks into the pan and fry until browned and medium-rare, about 5 mins. Turn halfway through. TIP: Cook each side for 1 min more if you like it more well done. IMPORTANT: Wash your hands and equipment after handling raw meat. It's safe to eat when browned on the outside.

Toast the Bread
4

a) Once the steaks have cooked, transfer to a board, cover with foil and allow to rest for a couple of mins, then cut into bite-sized pieces.

b) While the steaks rest, halve the ciabatta. Pop the ciabatta into the oven to warm through, 2-3 mins.

c) Meanwhile, grate the cheese. 

Make the Garlic Mayo
5

a) Once the garlic has cooked and cooled, cut the end with scissors, squeeze it out of the skin and mash with a fork.

b) In a small bowl, mix together the garlic and mayo, then season with salt and pepper.

c) Spread the roasted garlic mayo over each lid and base of the ciabatta halves.

Build your Sandwich
6

c) Top each ciabatta base with the caramelised onion, followed by the steak.

b) Arrange the cheese on top of the steak and, if you'd like to, pop it back into the oven until the cheese has melted, 2-3 mins.

c) Top the cheese with the rocket, then finish with the ciabatta lids. Share between 2 serving plates.

Enjoy!

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