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Seared Beef & Creamy Mustard Sauce

Seared Beef & Creamy Mustard Sauce

with Mashed Potato & Green Beans
4.0(1.4K)
Recipe Development Team
Recipe Development TeamUpdated on March 28, 2026
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Calories
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Protein
38.7g protein
Preparation Time
35 minutes
Difficulty
Easy
Allergens:
  • Milk
Produced in a facility that processes eggs, milk, fish, peanuts, sesame, shellfish, soy, tree nuts and wheat.
/ Serving 4 people

5 unit

potatoes

2 unit

carrot

1 bag

green beans

1 bag

parsley

1 bag

baby spinach leaves

1 packet

beef rump

2 packet

light thickened cream

(Contains: Milk;)

1 tub

Dijon mustard

1 cube

beef stock

Not included in your delivery

olive oil

⅓ cup

milk

(Contains: Milk;)

½ tsp

salt

80 g

butter

(Contains: Milk;)

per serving
Energy (kJ)2890 kJ
Fat39.4 g
of which saturates24 g
Carbohydrate43 g
of which sugars10.2 g
Protein38.7 g
Sodium692 mg
The average adult daily energy intake is 8700 kJ
Large Non-Stick Pan
Medium Pan
Lid

Cooking Steps

Make the mash
1

Bring a medium saucepan of lightly salted water to the boil. Peel the potato and cut into 2cm chunks. Add the potato to the saucepan of boiling water and cook until easily pierced with a knife, 10-15 minutes. Drain and return to the pan. Add the milk, salt and the butter and mash with a potato masher or fork until smooth. Cover with a lid to keep warm.

Get prepped
2

While the potato is cooking, thinly slice the carrot (unpeeled) into half-moons. Trim the green beans. Roughly chop the parsley.

Cook the veggies
3

In a large frying pan, heat a drizzle of olive oil over a medium-high heat. Add the carrot and green beans and cook until tender, 5-6 minutes. Add the baby spinach leaves and cook until wilted, 1-2 minutes. Transfer to a bowl and cover to keep warm.

Cook the steak
4

Return the frying to a high heat with a drizzle of olive oil. Season the beef rump with a pinch of salt and pepper on both sides. When the oil is hot, add the beef and cook for 2-3 minutes each side (depending on thickness), or until cooked to your liking. Transfer to a plate to rest.

TIP: This will give you a medium steak, but cook for a little less if you like it rare or a little longer for well done.

Make the sauce
5

Return the frying pan to a medium heat and add the light thickened cream and Dijon mustard. Crumble in 1 beef stock cube. Simmer until the sauce starts to thicken, 2-3 minutes. Stir in any beef resting juices.

TIP: Add a little less mustard if you're not a fan of the flavour.

Serve up
6

Thinly slice the steak. Divide the mashed potato, veggies and steak between plates. Spoon over the creamy mustard sauce and garnish with parsley.

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