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Rump Steak and Mustard Cream Sauce

Rump Steak and Mustard Cream Sauce

with Mini Roast Potatoes, Garlicky Pea Pods and Green Beans
Mimi Morley
Mimi MorleyUpdated on September 08, 2026
Get 50% off your first box & Free KitchenAid Mini Chopper on 3rd!
Get 50% off your first box & Free KitchenAid Mini Chopper on 3rd!
Calories
567 kcal
Protein
36.9g protein
Total
40 minutes
Difficulty
Easy
Allergens:
  • Milk
  • Mustard

This hearty recipe certainly cuts the mustard! Pair tender beef steaks with a wholegrain mustard creamy sauce, then serve with roast potatoes and garlicky green veg for a dinner that feels like a treat for your midweek.

Produced in a facility that processes eggs, milk, fish, peanuts, sesame, shellfish, soy, tree nuts, and wheat.
serving amount

250 grams

21 Day Aged British Rump Steaks

450 grams

Potatoes

80 grams

Green Beans

2 unit(s)

Garlic Clove

10 grams

Chicken Stock Paste

75 grams

Creme Fraiche

(Contains: Milk)

10 grams

Wholegrain Mustard

(Contains: Mustard)

80 grams

Young Pea Pods

Not included in your delivery

100 milliliter(s)

Water for the Sauce

Energy (kJ)2374 kJ
Energy (kcal)567 kcal
Fat26 g
of which saturates13.1 g
Carbohydrate51.7 g
of which sugars6.2 g
Dietary Fibre7.8 g
Protein36.9 g
Salt1.5 g
Potassium1076.8 mg
Calcium37.4 mg
Iron1 mg
Due to the different suppliers we purchase our products from, nutritional facts per meal can vary from the website to what is received in the delivered box, depending on your region.
Baking Tray
Garlic Press
Pan
Aluminum Foil
Lid

Cooking Steps

Roast the Potatoes
1

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.

Chop the potatoes into 2cm 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 until golden, 25-35 mins. Turn halfway through.

Start the Prep
2

Meanwhile, season the steaks with salt and pepper. IMPORTANT: Wash your hands and equipment after handling raw meat.

Trim the green beans. 

Peel and grate the garlic (or use a garlic press).

Cook the Steaks
3

When the potatoes have 15 mins left, heat a drizzle of oil in a large frying pan on high heat.

Once very hot, lay the steaks into the pan and fry until browned and medium-rare, about 6-8 mins depending on their thickness. Turn halfway through. TIP: Cook each side for 1 min 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: The steak is safe to eat when browned on the outside.

Make the Mustard Sauce
4

Pop the (now empty) steak pan back on medium-high heat (no oil).

Add the water for the sauce (see pantry for amount) and chicken stock paste. Bring to the boil, then simmer for 1-2 mins.

Next, stir in the creme fraiche. Bring to the boil and simmer until thickened, 3-4 mins.

Stir in the wholegrain mustard and remove from the heat. Taste and season with salt and pepper if needed.

Bring on the Greens
5

Meanwhile, heat a drizzle of oil in another frying pan on medium-high heat.

Once hot, add the green bebans. Stir-fry until starting to char, 2-3 mins. 

Stir in the young pea pods and garlic, turn the heat down to medium and cook for 1 min, then add a splash of water and cover with a lid or some foil.

Allow to cook until the greens are tender, 4-5 mins.

Finish and Serve
6

When everything is cooked, thinly slice the steaks widthways and transfer to your plates.

Serve the potatoes, young pea pods and green beans alongside.

Spoon the creamy mustard sauce over the steaks to finish.

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