Skip to main content
Roast Beef Sirloin & Pesto Butter Sauce

Roast Beef Sirloin & Pesto Butter Sauce

with Lemony Greens & Herby Roast Sweet Potato Rounds
4.5(111)
Recipe Development Team
Recipe Development TeamUpdated on September 16, 2025
Get up to $230 off + Free Extras for 8 weeks
Calories
436 kcal
Protein
38.6g protein
Preparation Time
35 minutes
Difficulty
Easy
Allergens:
  • Milk
  • Cashew
Produced in a facility that processes eggs, milk, fish, peanuts, sesame, shellfish, soy, tree nuts and wheat.
Serving amount

1

Brown Onion

2

Garlic

1 sachet

Dried Oregano

1

Capsicum

1

Zucchini

1 packet

Basil Pesto

(Contains: Milk, Cashew;)

1 packet

Baby Spinach Leaves

300 g

Premium Sirloin Tip

2

Sweet Potato

1

Lemon

Calories436 kcal
Energy (kJ)1820 kJ
Fat20.8 g
of which saturates4.1 g
Carbohydrate22.6 g
of which sugars13.8 g
Dietary Fibre8.9 g
Protein38.6 g
Sodium253 mg
The average adult daily energy intake is 8700 kJ

Cooking Steps

1

• Preheat oven to 220°C/200°C fan-forced. Cut sweet potato into 1cm rounds. • Place sweet potato and dried oregano on a lined oven tray. Drizzle with olive oil and season with salt and pepper. • Toss to coat, then bake until tender, 25-30 minutes.

2

• While the sweet potato is roasting, 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 second lined oven tray and roast for 17-22 minutes for medium or 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!

3

• When the beef is resting, thinly slice capsicum into strips. Thinly slice zucchini into half-moons. • Return the frying pan to medium-high heat with a drizzle of olive oil. Cook zucchini and capsicum, tossing, until tender, 4-5 minutes. Transfer to a medium bowl and cover to keep warm.

4

• Meanwhile, finely chop garlic and brown onion. Slice lemon into wedges. • Just before serving, add baby spinach leaves to the bowl with the veggies and toss to combine. Drizzle with a little olive oil and a squeeze of lemon juice. Season to taste with salt and pepper.

TIP: Toss the lemony greens just before serving to keep the salad leaves crisp.

5

• Return frying pan to medium-high heat with the butter and a drizzle of olive oil. Add onion and cook, stirring, until softened, 3-4 minutes. • Add garlic and cook until fragrant, 1 minute. • Remove pan from the heat and stir through the basil pesto until well combined. Pour in any resting juices from the steak. Season to taste with salt and pepper.

6

• Slice the sirloin. • Divide roast beef sirloin between plates. Spoon over the pesto butter sauce. • Serve with the lemony greens, herby sweet potato rounds and any remaining lemon wedges. Enjoy!

This week's must-try HelloFresh recipes