Skip to main content
Sirloin Steak and Caramelised Onion Baguette

Sirloin Steak and Caramelised Onion Baguette

Serves 2 | with Cheddar and Roasted Garlic Mayo
4.0(7)
Recipe Development Team
Recipe Development TeamUpdated on April 02, 2026
Calories
937 kcal
Protein
57.6g protein
Total
30 minutes
Difficulty
Easy
Allergens:
  • Cereals containing gluten
  • Oats
  • Rye
  • Soya
  • Wheat
  • Barley
  • Milk
  • Egg
  • Mustard
  • Nuts
  • Sesame
  • Walnuts
  • Lupin
  • Milk
  • 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 Sirloin Steaks

1 unit(s)

Onion

3 unit(s)

Garlic Clove

1 unit(s)

SlooOW Stone Oven White Baguette

(Contains: Cereals containing gluten, Oats, Rye, Soya, Wheat, Barley May contain traces of: Nuts, Sesame, Walnuts, Lupin, Milk)

60 grams

Mature Cheddar Cheese

(Contains: Milk May contain traces of: Milk)

64 grams

Mayonnaise

(Contains: Egg, Mustard)

20 grams

Wild Rocket

Not included in your delivery

½ tsp

Sugar

Energy (kJ)3922 kJ
Energy (kcal)937 kcal
Fat46.7 g
of which saturates18.2 g
Carbohydrate71.2 g
of which sugars10.7 g
Dietary Fibre6.3 g
Protein57.6 g
Salt3 g
Potassium151.7 mg
Calcium264.3 mg
Iron0.4 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.

Bake the Bread
2

a) Remove the bread from the packaging and pop onto a baking tray along with the garlic parcel.

b) Bake on the top shelf until the bread is toasted and golden and 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 the Sirloin Steaks
3

a) Next, heat a drizzle of oil in a large frying pan on high heat. Season the steaks with salt and pepper.

b) Once the oil is hot, lay the steaks into the pan and fry until browned, 1 min on each side.

c) Lower the heat slightly and cook for another 1-2 mins on each side if you want them medium-rare. TIP: Cook for 1-2 mins more if you like it more well done.  IMPORTANT: Wash your hands and equipment after handling raw meat. The steak is safe to eat when browned on the outside.

Slice and Grate
4

a) Once cooked, transfer the steaks 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, grate the cheese.

c) Once baked, allow the bread to cool for 5 mins, then slice it in half lengthways and again widthways.

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 baguette halves.

Build your Sandwich
6

a) Top each 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 baguette lids. Share between 2 serving plates.

Enjoy!

This week's must-try HelloFresh recipes