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Prime Porterhouse Steak & Rosemary Butter

Prime Porterhouse Steak & Rosemary Butter

with Sautéed Greens & Mash
4.5(60)
Recipe Development Team
Recipe Development TeamUpdated on October 19, 2026
Get up to $230 off
Get up to $230 off
Calories
: 
779 kcal
Protein
: 
57.6g protein
Preparation Time
: 
30 minutes
Difficulty
: 
Easy
Allergens:
  • Milk

A steakhouse classic, done at home. Thick-cut porterhouse seared to perfection, finished with a melting knob of rosemary butter that soaks into every bite. Silky mash and sautéed greens on the side, it’s simple, unapologetic and exactly what a good steak night should look like.

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

1

Baby Broccoli

1

Garlic

1 packet

Green Beans

1

Lemon

350 g

Porterhouse Steak

2

Potato

1 packet

Rosemary

1

Sea Salt Flakes

Not included in your delivery

1 drizzle

olive oil

30 g

butter (for the mash)

(Contains: Milk)

2 tbs

milk

(Contains: Milk)

40 g

butter (for the sauce)

(Contains: Milk)

¼ tsp

cracked black pepper

Energy (kJ)3260 kJ
Calories779 kcal
Fat49.6 g
of which saturates20 g
Carbohydrate26.1 g
of which sugars7.5 g
Dietary Fibre9.6 g
Protein57.6 g
Cholesterol90.3 mg
Sodium1140 mg
The average adult daily energy intake is 8700 kJ
•Large Non-Stick Pan
•Lid
•Medium Saucepan

Cooking Steps

Make the mash
1

• See ‘Top Steak Tips!’ (below left).  Take the butter 
(for the sauce) out from the fridge (to bring to room 
temp!).
• Bring a medium saucepan of lightly salted water to 
the boil. Peel potato and cut into large chunks.
• Add potato to the saucepan of boiling water and 
cook until easily pierced with a fork, 12-15 minutes.
• Drain and return to the saucepan. Add the butter 
(for the mash), milk and salt to the potato. Mash 
until smooth. Cover with a lid to keep warm. 

Get prepped
2

• While the potatoes are boiling, finely chop garlic.
• Trim green beans. 
• Trim baby broccoli and halve any thicker stalks 
lengthways. 
• Zest lemon to get a pinch, then slice into wedges.
• Pick and finely chop rosemary (see ingredients). 

Make rosemary butter
3

• In a large frying pan, heat a drizzle of olive oil 
over medium-high heat. Add garlic and cook until 
fragrant, 1 minute.
• Transfer to a bowl, then add rosemary, lemon 
zest, the softened butter (for the sauce) and the 
cracked black pepper. Season with salt and mash 
with a fork to combine. Set aside. 

Cook the Porterhouse steak
4

• Return frying pan to medium-high heat with a 
drizzle of olive oil.
• When the oil is hot, cook porterhouse steak for  
3-4 minutes each side for medium-rare, or until 
cooked to your liking. Using tongs, hold steak 
upright and sear fat until golden, 1 minute.
• Remove steak from pan, cover and rest for  
5 minutes.

Cook the veggies
5

• While the steak is resting, wipe out the frying pan 
and return to medium-high heat.
• Add baby broccoli and green beans with a dash of 
water and cook, tossing, until softened,  
5-6 minutes. 
• Add a squeeze of lemon juice, then season to taste 
with salt and pepper. 

Serve up
6

• Thinly slice steak.
• Divide Porterhouse steak, sautéed greens and mash 
between plates.
• Season steak with sea salt flakes, then spoon over 
rosemary butter and resting juices.
• Serve with any remaining lemon wedges. Enjoy! 

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