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All-American Beef Sirloin & Mustard Sauce

All-American Beef Sirloin & Mustard Sauce

with Sour Cream & Onion-Potato Mash
Recipe Development Team
Recipe Development TeamUpdated on June 01, 2026
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Calories
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Protein
41.7g protein
Preparation Time
40 minutes
Difficulty
Easy
Allergens:
  • Milk
  • May contain traces of allergens

You don’t have to wait for a special occasion to create this gourmet feast, because we're making tonight, steak night! Enjoy this delectable combination of roast beef sirloin tip, doused in our gorgeous Dijon mustard sauce and served on a bed of fluffy mash. This recipe is under 650kcal per serving.

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

1 packet

Premium Sirloin Tip

1 sachet

All-American spice blend

1

carrot

1

zucchini

2

potato

1 packet

Light Sour Cream

(Contains: Milk)

1

brown onion

1 tub

Dijon mustard

Not included in your delivery

olive oil

40 g

butter (for the mash)

(Contains: Milk)

¼ tsp

salt

20 g

butter (for the sauce)

(Contains: Milk)

¼ cup

water

1 tsp

brown sugar

Energy (kJ)2244 kJ
Fat21.4 g
of which saturates11.9 g
Carbohydrate42.8 g
of which sugars23.2 g
Protein41.7 g
Sodium887 mg
The average adult daily energy intake is 8700 kJ
Baking Paper
Medium Saucepan
Lid
Large Frying Pan

Cooking Steps

1
1

• Preheat oven to 220°C/200°C fan-forced. • See 'Top Steak Tips!' (below). In a medium bowl, combine All-American spice blend and a drizzle of olive oil. Add premium sirloin tip then turn to coat. • In a large frying pan, heat a drizzle of olive oil over high heat. • Season premium sirloin tip all over and add to hot pan. Sear until browned, 1 minute on both sides. • Transfer to a lined oven tray and roast for 17-22 minutes for medium or until cooked to your liking. • Remove from oven and cover with foil to rest for 10 minutes.

TIP: The meat will keep cooking as it rests!

2
2

• Bring a medium saucepan of lightly salted water to the boil. • Cut carrot and zucchini into bite-sized chunks. • Place veggies on a second lined oven tray with a drizzle of olive oil and a pinch of salt and pepper. Toss to coat. Cook until tender, 20-25 minutes.

3
3

• While the veggies are roasting, cut potato into large chunks. • To the saucepan of boiling water, add potato and cook until easily pierced with a knife, 10-15 minutes. • Drain and return to the saucepan. Add the butter (for the mash), light sour cream and the salt to the saucepan. • Mash until smooth. Cover with a lid to keep warm.

Little cooks: Get those muscles working and help mash the potatoes!

4
4

• While the potato is cooking, finely chop brown onion. • Heat a large frying pan over medium heat with a drizzle of olive oil. Add onion and cook, until softened, 5-6 minutes. • Add onion to the mashed potato and stir through. Cover with a lid to keep warm.

5
5

• While the steak is resting, return frying pan to medium heat. Add the butter(for the sauce), Dijon mustard, the water and the brown sugar. Season with a pinch of salt and pepper. • Stir until slightly thickened, 1 minute. Add the resting juices from the steak and remove from the heat.

6
6

• Slice sirloin tip. • Divide the sour cream and onion-potato mash and All-American steak between plates. • Serve with the roast veggies and mustard sauce. Enjoy!

Customer reviews

Review summary

Updated on Feb 2026
  • Flavour: Many enjoyed the mustard sauce, calling it delicious and a wonderful complement to the beef. Some found it too strong or watery.
  • Ease of prep: Several praised the simple, easy-to-follow recipe, though a few mentioned it was a bit involved with multiple steps.
  • Suggestions: Some recommend adjusting cooking time for more tender beef. Consider offering larger portions or the option to increase meat quantity.
  • Portions: Many felt the beef serving was too small, especially for families or when paying extra for premium cuts.
  • Vegetables: Roasted zucchini was a pleasant surprise for some. A few suggested more variety beyond carrots and zucchini.
AI-generated from customer reviews

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