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Roast Beef Sirloin & Decadent Onion Sauce

Roast Beef Sirloin & Decadent Onion Sauce

with Potatoes & Nutty Sautéed Greens
4.5(164)
Recipe Development Team
Recipe Development TeamUpdated on January 21, 2026
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Calories
536 kcal
Protein
41.8g protein
Difficulty
Easy
Allergens:
  • Milk
  • Pine nut
  • May contain traces of allergens
  • Almond
  • Brazil nut
  • Cashew
  • Hazelnut
  • Macadamia
  • Milk
  • Peanuts
  • Pecan
  • Pistachio
  • Sesame
  • Soy
  • Walnut
Produced in a facility that processes eggs, milk, fish, peanuts, sesame, shellfish, soy, tree nuts and wheat.
Serving amount

1

Baby Broccoli

1

Brown Onion

2

Garlic

1 packet

Green Beans

1 packet

Light Cooking Cream

(Contains: Milk;)

1 packet

Pine Nuts

(Contains: May contain traces of allergens, Pine nut, Almond, Brazil nut, Cashew, Hazelnut, Macadamia, Milk, Peanuts, Pecan, Pistachio, Sesame, Soy, Walnut;)

2

Potato

300 g

Premium Sirloin Tip

1 sachet

Thyme

1 sachet

Vegetable Stock Pot

Not included in your delivery

1 drizzle

olive oil

¼ cup

water

Energy (kJ)2240 kJ
Calories536 kcal
Fat29.4 g
of which saturates11.9 g
Carbohydrate26.4 g
of which sugars11.1 g
Dietary Fibre8.5 g
Protein41.8 g
Cholesterol45.8 mg
Sodium448 mg
The average adult daily energy intake is 8700 kJ
Large Non-Stick Pan
Baking Paper

Cooking Steps

Roast the potatoes
1

• See ‘Top Roast Tips!’ (below left).
• Preheat oven to 220°C/200°C fan-forced.
• Cut potato into bite-sized chunks.
• Place potato on a lined oven tray. Drizzle with olive 
oil, season with salt and toss to coat.
• Roast until tender, 20-25 minutes.  

Roast the sirloin tip
2

• In a large frying pan, heat a drizzle of olive oil over 
high heat. Season premium sirloin tip all over, then 
add to the hot pan. Sear until browned, 1 minute on 
all sides.
• Transfer to a second lined oven tray and roast for 
15-20 minutes (for a 300g piece), 17-22 minutes 
(for a 450g piece) or 18-23 minutes (for a 600g 
piece) for medium-rare or until cooked to  
your liking.
• Remove from the oven and cover with foil to rest for 
10 minutes. 
TIP: The meat will keep cooking as it rests! 

Get prepped
3

• While the sirloin is roasting, trim baby broccoli and 
green beans.
• Thinly slice brown onion.
• Finely chop garlic.
• Pick thyme leaves.

Cook the veggies
4

• While the steak is resting, return the frying pan to 
medium-high heat with a drizzle of olive oil. Cook 
baby broccoli, tossing, until tender, 5-6 minutes.
• Add green beans, stirring, until softened,  
2 minutes.
• Add half the garlic and cook until fragrant,  
1-2 minutes.
• Transfer to a medium bowl and cover to keep warm.

Make the creamy onion sauce
5

• Return frying pan to medium-high heat with a 
drizzle of olive oil. Cook onion, stirring, until tender, 
4-5 minutes.
• Stir through remaining garlic and thyme until 
fragrant, 1 minute.
• Add light cooking cream, the water and stock 
concentrate and simmer until thickened,  
2-3 minutes. Season with pepper. 
TIP: Add the beef resting juices to the sauce for extra 
flavour. 

Finish & serve
6

• Sprinkle pine nuts over the greens. Season to taste, 
then toss to combine.
• Very thinly slice beef.
• Divide roast beef sirloin, potatoes and nutty sautéed 
greens between plates.
• Spoon decadent onion sauce over the sirloin to 
serve. Enjoy! 

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