5-Ingredient Herb Mustard Sirloin Steak Recipe

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It is important to keep a sirloin steak recipe simple, as the succulent cut of meat is so flavorsome on its own, the last thing to do is to overpower it with too many other flavors. This recipe, consisting of just 5 ingredients and taking only 30 minutes from start to finish, is ideal for ensuring you do justice to the steak!  All you need is olive oil, Dijon mustard, Italian seasoning, garlic powder, and of course sirloin steak!

Close up of a sirloin steak, cut into slices, with grilled corn salad on the side. Text overlay says"Herb Mustard Sirloin Steak". Similar photos of the recipe from various angles are used throughout but with different text overlays unless otherwise described.

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Sirloin Steak Recipe

The full ingredients list and instructions are found in the printable recipe card at the end of this post. I highly recommend reading all the way through for any tips or substitute suggestions, to ensure that you have any specialized ingredients and equipment required and that you understand the steps and timings involved.

I have mentioned before that I have got readers from all over the world, but predominately from the USA and the UK.

However, these two countries (and I’m sure other countries too!) use different words for the same foods. The classic example is [Potato] Chips in the US are what we in the UK call Crisps. Chips for the British are what the Americans would call French Fries.

I know that cuts of beef vary too, not only between the UK and US but also in several other countries. Check out the Wikipedia page for Cuts of Beef to see how different it really is! It has amazed me!

In this recipe, I refer to the US cut sirloin, which in the UK would be rump steak. They both come from the same part of the animal, so it’s just semantics! If you’re in the UK and use sirloin, it’s not going to make a difference – both are great cuts of meat!

This delicious steak recipe doesn’t require a lot of fuss. Just a few simple ingredients and less than 30 minutes are all it takes to whip up a flavor-packed main course your entire family will love!


Ingredients & Equipment Used In This Recipe

While most ingredients can be bought in grocery stores, for your convenience, any specialized or notable ingredients (and equipment) needed for this recipe have been listed below and linked to Amazon or other stores if available online.

It does not include staple ingredients such as oil, salt, and pepper, as you’re likely to have those in your kitchen already. The complete list of ingredients with measurements is found in the recipe card.

  • Protein – Sirloin Steak
  • Dijon Mustard
  • Garlic Powder
  • Italian Seasoningthis recipe uses store-bought Italian Seasoning, but it is so easy to make your own herb mixes, especially if you already have a bunch of herbs and spices in your pantry already. Just mix equal measures of dried basil, oregano, rosemary, parsley, and thyme. You can also add a pinch of garlic granules or powder as well as red chili flakes if you like. Store in an airtight jar and use in recipes as required.

Recipes on The Purple Pumpkin Blog use both cup measurements and/or weighted measurements. American cups and kitchen food scales are handy pieces of equipment to have in your kitchen as it means you’ll be able to make all of the different recipes on my blog. I try to give American, imperial, and metric measurements in my recipes. Please note, you can mix cup measurements with weighted measurements, but never mix imperial (pounds, ounces, pints, etc.,) with metric (kilograms, grams, litres, etc.,).

Grilled Herb Mustard Sirloin

More Recipes Using Steak

The hero ingredient in this dish is of course steak, so here are some more recipes using the same:

More 30-Minute Recipes

Looking for more 30-minute recipes? Check these ones out:

Perfectly Cooked Sirloing Steak with Herbs & Mustard

Recipe Tips

  • The actual cooking time for this recipe will vary depending on the thickness of the meat, the starting internal temperature, and the desired level of doneness.
  • Check this temperature chart for beef for the degree of doneness (Rare, Medium Rare, Medium, Medium Well, Well Done).

How Do I Make Herb Mustard Sirloin Steak?

Check out the printable recipe card below with full ingredients and instructions. Any demonstration photos do not print out to save your ink.

How To Make Herb Mustard Sirloin Steak

Herb Mustard Sirloin Steak

Yield: 4
Prep Time: 5 minutes
Cook Time: 20 minutes
Additional Time: 5 minutes
Total Time: 30 minutes

This recipe, consisting of just 5 ingredients and taking only 30 minutes from start to finish, is ideal for ensuring you do justice to the steak!


  • 2 Tbsp extra virgin olive oil
  • 2 Tbsp Dijon mustard
  • 2 tsp Italian seasoning
  • ½ tsp garlic powder
  • 1½ lbs (680g) sirloin steak
  • Sea salt and black pepper, to taste


  1. Heat olive oil in a large skillet over medium-high heat.
  2. In a small bowl, combine the mustard with the Italian seasoning and garlic powder. Generously coat the steak with the herbed mustard on all sides. Season with salt and black pepper, to taste.
  3. Swirl the hot skillet to evenly distribute olive oil. Add the steak and sear on all sides, including edges, approximately 1-2 minutes per side.
  4. Reduce heat to medium and cook on one side for approximately 5-7 minutes. Turn the steak and cook for another 3-5 minutes, or until the steak reaches desired level of doneness.
    Tip: Use an instant-read thermometer to determine when the internal temperature is 5°F below the desired result.* (The temperature will continue to rise while the meat rests).
  5. Remove from the heat and let the steak rest for 5 minutes.
  6. To serve, slice the steak against the grain and serve with your choice of side dishes. Enjoy!

    How To Make Herb Mustard Sirloin Steak

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Nutrition Information:
Yield: 4 Serving Size: 1
Amount Per Serving: Calories: 480Total Fat: 31gSaturated Fat: 10gTrans Fat: 0gUnsaturated Fat: 17gCholesterol: 156mgSodium: 372mgCarbohydrates: 1gFiber: 1gSugar: 0gProtein: 46g

This site uses Nutritionix to provide estimated nutrition. Nutritional information is always approximate and will depend on the quality of ingredients used and serving sizes. If you need exact calories and macros, please do your own calculations.

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Make It A Full Meal

You’ve made the main dish, but what about the rest of the courses?

Here are additional recipes to make a full meal for a dinner party or special occasion:

There are 500+ Recipes on The Purple Pumpkin Blog for you to enjoy – please feel free to check them out too.

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