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grilled steak kabobs piled on a white serving platter
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Grilled Steak Kabobs With Spicy Mustard Sauce

Grilled steak kabobs with spicy mustard sauce are a delicious grilled entree perfect for any cookout! These steak skewers feature tender sirloin strung with new potatoes, onions, and mushrooms for a complete meal made more fun on a stick!
Prep Time10 minutes
Cook Time30 minutes
Total Time40 minutes
Course: Dinner, Entree, Main Course
Cuisine: American
Servings: 8 kabobs
Calories: 455kcal

Ingredients

For The Steak Kabobs

  • 3/4 cup extra virgin olive oil
  • 2 lbs beef sirloin steak cubed
  • salt & pepper to taste
  • 16 small new potatoes roughly 1 - 1 1/2 lbs
  • 12 cipollini onions
  • 16 cremini mushrooms washed thouroughly

For The Spicy Mustard Sauce

  • 1/2 cup steak sauce
  • 1/4 cup spicy mustard

Instructions

  • Preheat your grill to medium high heat.
  • Add the potatoes to a a pot and cover with water, bring to a boil and cook for 10-12 minutes, just until tender. Immediately remove them from the water and run under cold water until cooled to stop the cooking process.
    16 small new potatoes
  • Bring another pot of water to a boil then add the onions and cook for 5 minutes. Strain the onions, and once cooled to the touch use a tea towel to rub the skins off. Discard skins.
    12 cipollini onions
  • Thread the steak cubes, cooled potatoes, cooled onions, and mushrooms onto skewers- alternating as you go.
    2 lbs beef sirloin steak, 16 cremini mushrooms
  • Add the oil to a shallow bowl and turn the skewers in the oil to completely coat. Then season them generously with salt and pepper.
    3/4 cup extra virgin olive oil, salt & pepper
  • In a small bowl add the steak sauce and spicy mustard, whisk together until evenly combined. Brush this sauce evenly out over all of the prepared skewers. Reserve any remaining spicy mustard steak sauce for serving.
    1/2 cup steak sauce, 1/4 cup spicy mustard
  • Grill the skewers for 12- 14 minutes, turning every couple of minutes, until the meat and veggies are tender.
  • Serve and enjoy, with the reserved spicy mustard steak sauce for dipping.

Notes

  • You absolutely can not skip boiling the potatoes and onions before grilling the skewers. The veggies will not cook enough if you skip that step.
  • Reserve leftover mustard sauce for dipping.
  • While I recommend sirloin, you could use another cut like New York strip or tri tip.

Nutrition

Calories: 455kcal | Carbohydrates: 29g | Protein: 30g | Fat: 25g | Saturated Fat: 4g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 17g | Trans Fat: 0.001g | Cholesterol: 67mg | Sodium: 404mg | Potassium: 1179mg | Fiber: 4g | Sugar: 5g | Vitamin A: 52IU | Vitamin C: 26mg | Calcium: 64mg | Iron: 3mg