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Lamb Rump & Creamy Mustard Sauce

with Mashed Potato
Recipe Development Team
Recipe Development TeamUpdated on August 27, 2025
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Calories
237 kcal
Protein
7.2g 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 amount

1 packet

Light Cooking Cream

(Contains: Milk)

1 packet

Green Beans

3

Garlic

Lamb Rump

1 packet

Wholegrain Mustard

1

Potato

1

Carrot

Calories237 kcal
Energy (kJ)992 kJ
Fat14.5 g
of which saturates7.9 g
Carbohydrate19.3 g
of which sugars9.6 g
Dietary Fibre6.8 g
Protein7.2 g
Sodium311 mg
The average adult daily energy intake is 8700 kJ

Cooking Steps

1

Preheat the oven to 220°C/200°C fan-forced. Bring a medium saucepan of lightly salted water to the boil. Lightly score the lamb fat in a 1cm criss-cross pattern and season with salt and pepper. Place the lamb, fat-side down, in a large frying pan (no need for oil!). Place the pan over a medium heat and cook, undisturbed, until golden, 10-12 minutes. Increase the heat to high and sear the lamb rump on all sides for 30 seconds. TIP: Starting the lamb in a cold pan helps the fat melt without burning.

2

While the lamb is cooking, peel the potato and cut into 2cm chunks. Trim the green beans. Cut the carrot (unpeeled) into batons. Finely chop the garlic (or use a garlic press). Transfer the lamb, fat-side up, to a second oven tray lined with baking paper. Roast for 15-20 minutes for medium or until cooked to your liking. Remove the lamb from the oven, cover with foil and set aside to rest for 10 minutes. TIP: The lamb will keep cooking as it rests!

3

Add the potato to the saucepan of boiling water and cook until easily pierced with a knife, 15 minutes. Drain the potato and return to the saucepan. Add the butter, milk and salt to the saucepan. Season with a pinch of pepper. Mash with a potato masher or fork until smooth. Cover with a lid to keep warm.

4

While the potatoes are cooking, return the frying pan to a medium-high heat. Add the green beans, carrot and a splash of water and cook, tossing, until tender, 4-5 minutes. Add 1/2 the garlic and cook until fragrant, 1 minute. Season to taste. Set aside and cover to keep warm.

5

TIP: Don't wash out the frying pan as it will add lots of flavour. While the lamb is resting, return the frying pan to a medium heat. Add the remaining garlic and cook until fragrant, 1 minute. Add the light thickened cream, wholegrain mustard (see ingredients) and honey. TIP: Add a little less mustard if you're not a fan of the flavour. Cook, stirring, until slightly thickened, 1-2 minutes. Season to taste.

6

Slice the lamb and season to taste. Divide the lamb, potato mash and veggies between plates. Drizzle with the honey mustard sauce.

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