Herbed Mustard Sirloin Steak simple delicious and ready in under 30 minutes. Grill indoors or out for an easy weeknight meal anytime of year.

Herbed Mustard Sirloin is a simple flavor packed steak that can be prepared on in an indoor grill pan or outside on a grill.

sirloin steak and tomatoes on a cast iron griddle with text overlay "herbed mustard sirloin"

A good steak doesn't need a lot of work to be a fabulous meal. But if you want to kick it up a few notches, try mixing some herbs with Dijon mustard and slathering it on the steak before grilling.

You can grill indoors with a cast iron grill pan, or outside on the grill if the weather permits.

This recipe uses sirloin, but obviously you can use your favorite steak such as rib eye or t-bone. Serve it with a simple salad or throw some vegetables on the grill along with the steak for a quick meal.

While we prefer our steak medium rare I know not everyone else does so here's a chart to help you judge doneness. If you don't cook steak often, I recommend using an Instant read thermometer.

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Herbed Mustard Sirloin

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Ingredients

2 tablespoons extra virgin olive oil
2 tablespoons Dijon mustard
2 teaspoons Italian seasoning
½ teaspoon garlic powder
1½ pound sirloin steak
salt and pepper (to taste)

Instructions

Heat olive oil in a large cast iron grill pan over medium-high heat. Or preheat outdoor gas grill.
In a small bowl, combine the mustard, Italian seasoning, and garlic powder. Spread mixture over the steak on all sides. Sprinkle with salt and black pepper, to taste.
Place steak on grill and sear on both sides, approximately 2-3 minutes per side.
Reduce heat to medium and cook on one side for 7 minutes. Turn steak and cook for another 5-10 minutes, or until steak reaches desired level of doneness.
Remove from heat, tent with a piece of aluminum foil and let rest for 5-10 minutes before serving.

Notes

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.