Enjoy a juicy sirloin steak dinner with creamy mushroom sauce and mashed potatoes. This easy, flavorful recipe is perfect for a cozy meal at home!
If you’ve been looking for an easy and delicious sirloin steak dinner idea, this recipe is a must-try! It’s packed with flavour, feels like the ultimate healthy comfort food, and is guaranteed to impress your family or guests.
We love ordering steak at restaurants, but let’s be honest — good quality steak can get pretty pricey. So when the craving hit, I decided to give it a go at home, and I’m so glad I did! This was actually my first time cooking steak, and I was so proud of how well it turned out that I had to share the recipe with you all.
In this post, I’ll walk you through how to cook sirloin steak to perfection, along with a creamy mushroom sauce that takes the dish to the next level. Trust me, once you try this, you’ll be making it again and again!
This post is all about the best sirloin steak dinner!
Don’t forget to save this sirloin steak dinner pin to come back to try later!
Delicious Sirloin Steak Dish
Ingredients Needed
Sirloin
- Sirloin steaks (1 for each person)
- Salt and black pepper
- Ghee for frying
- Fresh rosemary or thyme
- Grass fed butter
- Garlic cloves
Creamy Mushroom Sauce
- White onion
- Mushrooms
- Dijon mustard
- Worcestershire sauce
- Single cream
Mashed potatoes
- Potatoes
- Butter
- Milk
- Extra virgin olive oil – not a very common ingredient for mashed potatoes but it’s my ‘secret ingredient’ to delicious mash
- Salt
How To Make This Sirloin Steak Dinner
How To Cook Sirloin Steak
- Wash and pat dry your steak.
- Let it sit at room temperature for at least 30 minutes.
- Generously season with salt and black pepper on both sides.
- In a preheated pan (medium-high/low heat), add 1-2 tbsp of ghee.
- Place the fat side of the steak (the edge) down first and hold it with your hand or a tong for 1-2 minutes to render the fat.
- Cook for 2.5-3 minutes on one side for medium-rare (adjust timing based on your preference), then flip and cook the other side.
- When there’s about 1 minute left, add 1-2 tbsp of butter and 1-2 cloves of garlic (either whole or chopped). I used fresh thyme instead of rosemary, but both work well.
- Once the butter has melted, tilt the pan and baste the steak with the garlic-infused butter.
- Remove from the pan and cover with foil to rest before cutting.
How To Make The Creamy Mushroom Sauce
- Finely chop a small onion and thinly slice the mushrooms.
- In the same pan used for the steak, cook the onions until soft.
- Add the mushrooms and cook until tender.
- Stir in ½-1 tbsp of mustard (I used 1 tbsp but would probably prefer ½ tbsp next time — adjust to your taste).
- Add single cream and mix well.
- Let it simmer until the sauce thickens slightly.
How To Make Mashed Potatoes
- Peel your potatoes and cut them into quarters.
- Place them in a deep pan and cover with water.
- Bring to a boil and cook until the potatoes are soft — you’ll know they’re ready when a fork slides in easily.
- Drain and transfer the potatoes to a bowl.
- Add butter, milk, salt, and a drizzle of extra virgin olive oil. Mash until smooth and creamy.
Spoon the mashed potatoes onto a plate, place your sliced steak on top, and finish by pouring the creamy mushroom sauce over it.
Other Dinner Recipes You’ll Enjoy:
Sirloin Steak Dinner
Ingredients
Sirloin Steak
- 4 sirloin steaks
- 2 tbsp ghee for frying
- salt and pepper to taste add a generous amount
- 2 garlic cloves thinly sliced
- 1 tbsp butter per steak (for when you baste the steak)
- Fresh rosemary/thyme
Creamy Mushroom Sauce
- 1 small white onion finely chopped
- 1-2 cups mushrooms
- a few drops of worcestershire sauce
- 1/2-1 tbsp dijon mustard
- 300 ml single cream
Mashed Potatoes
- 4 medium potatoes 1 potato per person
- 2 tbsp extra virgin olive oil
- 1/4 cup milk add more if its not creamy enough but slowly
- salt to taste
- 1-2 tbsp butter
Instructions
How To Cook Sirloin Steak
- Wash and pat dry your steak.
- Let it sit at room temperature for at least 30 minutes.
- Generously season with salt and black pepper on both sides.
- In a preheated pan (medium-high/low heat), add 1-2 tbsp of ghee.
- Place the fat side of the steak (the edge) down first and hold it with your hand or a tong for 1-2 minutes to render the fat.
- Cook for 2.5-3 minutes on one side for medium-rare (adjust timing based on your preference), then flip and cook the other side.
- When there’s about 1 minute left, add 1-2 tbsp of butter and 1-2 cloves of garlic (either whole or chopped). I used fresh thyme instead of rosemary, but both work well.
- Once the butter has melted, tilt the pan and baste the steak with the garlic-infused butter.
- Remove from the pan and cover with foil to rest before cutting.
How To Make The Creamy Mushroom Sauce
- Finely chop a small onion and thinly slice the mushrooms.
- In the same pan used for the steak, cook the onions until soft.
- Add the mushrooms and cook until tender.
- Stir in ½-1 tbsp of mustard (I used 1 tbsp but would probably prefer ½ tbsp next time — adjust to your taste).
- Add single cream and mix well.
- Let it simmer until the sauce thickens slightly.
How To Make Mashed Potatoes
- Peel your potatoes and cut them into quarters.
- Place them in a deep pan and cover with water.
- Bring to a boil and cook until the potatoes are soft — you’ll know they’re ready when a fork slides in easily.
- Drain and transfer the potatoes to a bowl.
- Add butter, milk, salt, and a drizzle of extra virgin olive oil. Mash until smooth and creamy.
This post was all about a delicious sirloin steak dinner!
Make sure to save this pin to try it out later!
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