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Beef Steak & Stuffed Portobello Mushrooms

Beef Steak & Stuffed Portobello Mushrooms

with Twice-Cooked Potatoes, Greens & Gravy
4.0(47)
Vitoria Mantovanni
Vitoria MantovanniUpdated on April 17, 2026
Get tasty recipes from just $6 per serving
Calories
485 kcal
Protein
45.2g protein
Total
35 minutes
Difficulty
Easy
Allergens:
  • Milk
  • Wheat
  • Gluten
Produced in a facility that processes eggs, milk, fish, peanuts, sesame, shellfish, soy, tree nuts, and wheat.
Serving amount

1 packet

Baby Potatoes

300 g

Beef Rump

2

Garlic

1

Baby Broccoli

1

Portobello Mushrooms

1 packet

Grated Parmesan Cheese

(Contains: Milk; )

½ packet

Panko Breadcrumbs

(Contains: Wheat, Gluten; )

1 sachet

Gravy Granules

(Contains: Wheat, Gluten; )

1 sachet

Chilli Flakes

Not included in your delivery

½ cup

boiling water

Energy (kJ)2030 kJ
Calories485 kcal
Fat11.7 g
of which saturates6.3 g
Carbohydrate43.1 g
of which sugars3.3 g
Dietary Fibre5.9 g
Protein45.2 g
Cholesterol55 mg
Sodium576 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.
Large Non-Stick Pan
Medium Pan
Baking Paper

Cooking Steps

Cook the potatoes
1

 See ‘Top Steak Tips!’ (below left). 
• Boil the kettle. 
• Preheat oven to 240°C/220°C fan-forced.
• Halve baby potatoes. 
• Half-fill a medium saucepan with boiling water.
• Cook potatoes over high heat, until just tender, 
12-15 minutes.  

Get prepped
2

• Meanwhile, finely chop garlic.
• Trim baby broccoli, then halve any thicker stalks 
lengthways.
• Remove portobello mushroom stems, then 
roughly chop.
• In a medium bowl, combine grated Parmesan 
cheese, garlic, portobello stems, a pinch of 
chilli flakes (if using), panko breadcrumbs  
(see ingredients) and a good drizzle of olive oil. 
Season to taste with salt and pepper. 

Roast the potatoes & mushrooms
3

• Drain potatoes and place on a lined oven tray.
• Drizzle with olive oil and season with salt and 
pepper, tossing to coat.
• Using the flat base of a bowl, roughly crush 
potatoes. Roast until golden, 25-30 minutes.
• Meanwhile, place mushrooms on a second lined 
oven tray, then tightly fill with Parmesan crumb 
mixture. Roast until golden and tender,  
20-25 minutes. 

Cook the steak
4

• When the potatoes have 15 minutes remaining, 
season beef rump with salt and pepper.
• In a large frying pan, heat a drizzle of olive oil 
over medium-high heat.
• When oil is hot, cook beef for 4-5 minutes each 
side for medium-rare, or until cooked to your 
liking. Transfer to a plate to rest. 


TIP: The beef will keep cooking as it rests.

Cook the baby broccoli
5

• Wipe out frying pan, then return to medium-high 
heat with a drizzle of olive oil.
• Cook baby broccoli, until tender, 5-6 minutes. 
Season to taste.

Finish & serve
6

• In a medium heatproof bowl, combine  
gravy granules and the boiling water  
(see ingredients), whisking, until smooth,  
1 minute.
• Slice steak. 
• Divide beef steak, stuffed portobello 
mushrooms, twice-cooked potatoes and baby 
broccoli between plates. 
• Serve with gravy. Enjoy!