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21 Day Aged Sirloin and Truffle Smashed Potatoes
21 Day Aged Sirloin and Truffle Smashed Potatoes

21 Day Aged Sirloin and Truffle Smashed Potatoes

with Garlic Butter Sauce, Tenderstem® Broccoli and Green Beans

Recipe Development Team
Recipe Development TeamUpdated on October 02, 2025

Our 21 Day Aged Sirloin and Truffle Smashed Potatoes is inspired by classic restaurant dishes, focused on making a gourmet ingredient shine with a combination of premium sides and flavours.

Tags:
High Protein
Carb Smart
Customer Favourite
Low Carb
Allergens:
Sulphites
Milk

The quantities provided above are averages only.

Boxes and ingredients are packed in facilities that handles Peanut, Nuts, Sesame, Fish, Crustaceans, Milk, Egg, Mustard, Celery, Soya, Gluten and Sulphites. Due to the war in Ukraine, it has been necessary to substitute sunflower oil with rapeseed oil in some products without a label change. The FSA have advised that allergic reactions to rapeseed oil are rare.

Total40 minutes
Active 25 minutes
DifficultyMedium

Ingredients

serving amount

2 unit(s)

21 Day Aged British Sirloin Steaks

450 grams

Potatoes

1 bunch(es)

Flat Leaf Parsley

1 unit(s)

Garlic Clove

1 unit(s)

Echalion Shallot

80 grams

Green Beans

80 grams

Tenderstem® Broccoli

15 milliliter(s)

Cider Vinegar

(Contains: Sulphites)

10 grams

Chicken Stock Paste

30 grams

Unsalted Butter

(Contains: Milk)

1 sachet(s)

Truffle Zest

Not included in your delivery

75 milliliter(s)

Water for the Sauce

Nutritional information

Energy (kJ)3004 kJ
Energy (kcal)718 kcal
Fat37.5 g
of which saturates19 g
Carbohydrate50.3 g
of which sugars5.8 g
Dietary Fibre8.6 g
Protein46.4 g
Salt1.55 g
Always refer to the product label for the most accurate ingredient and allergen information.

Utensils

Baking Tray
Bowl
Pan
Garlic Press
Lid
Medium Saucepan
Aluminum Foil

Cooking Instructions and Tips

Roast the Potatoes
1

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

Chop the potatoes into 3cm chunks (no need to peel). Pop onto a large baking tray. Drizzle with oil, season with salt and pepper, then toss to coat. Spread out in a single layer. TIP: Use two baking trays if necessary.

When the oven is hot, roast on the top shelf for 20 mins - you'll roast them for longer once you've crushed them.

Cook the Veg
2

Meanwhile, roughly chop the parsley (stalks and all). Peel and grate the garlic (or use a garlic press). 

Halve, peel and chop the shallot into small pieces. Trim the green beans. Halve any thick broccoli stems lengthways.

Heat a drizzle of oil in a large frying pan on medium-high heat. Once the pan is hot, add the green beans and broccoli. Stir-fry until starting to char, 2-3 mins. 

Add a splash of water and immediately cover with a lid or some foil. Cook until the beans and broccoli are tender, 4-5 mins.

Transfer the veg to a bowl and cover to keep warm, then set aside. Give the pan a quick wipe out.

Time for Sauce
3

Heat a drizzle of oil in a medium saucepan on medium heat.

Once hot, add the shallot and cook until softened, 4-5 mins, then add the garlic and cook for 30 secs.

Pour in the cider vinegar and allow to evaporate, 30 secs. Add the chicken stock paste and water for the sauce (see pantry for amount). Bring to the boil, then lower the heat and simmer until reduced by half, 2-3 mins.

Stir in the butter until melted and combined, then remove from the heat and cover to keep warm.

Smash the Potatoes
4

When the potatoes have cooked for 20 mins, remove them from the oven. Use the bottom of a bowl or pan to lightly crush each potato.

Drizzle the smashed potatoes with more oil, and return to the top shelf of your oven until crispy and golden, 10-15 mins.

Return your (now empty) frying pan to high heat with a drizzle of oil. Season the steaks with salt and pepper.

Fry the Steak
5

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

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.

Once cooked, transfer to a board, cover with foil and allow to rest for a couple of mins. IMPORTANT: Wash your hands and equipment after handling raw meat. The steak is safe to eat when browned on the outside.

Serve!
6

When everything's ready, reheat the garlic butter sauce if needed and stir in the parsley

Sprinkle the truffle zest over the potatoes and toss to coat.

Slice the steak widthways into 2cm slices and transfer to your plates. Spoon over the garlic butter sauce.

Serve the truffle potatoes and veg alongside.

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