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Grilled Steak & Onion Tacos

Total Time

Prep/Total Time: 30 min.


4 servings

Updated: Oct. 21, 2022
Fire up the grill for soft tacos stuffed with zesty beef, sweet and tender red onions, and health-boosting avocado. Oh, yeah!
Grilled Steak & Onion Tacos Recipe photo by Taste of Home


  • 1 beef top sirloin steak (1 to 2 pounds)
  • 2 tablespoons taco seasoning
  • 2 medium red onions, cut into 1/2-inch slices
  • 2 teaspoons olive oil
  • 8 flour tortillas (6 inches)
  • 2 medium ripe avocados, peeled and sliced
  • Sour cream, fresh cilantro leaves and lime wedges


  1. Sprinkle steak with taco seasoning. Grill steak, covered, on lightly greased rack over medium heat or broil 4 in. from the heat for 6-8 minutes on each side, until meat reaches desired doneness (for medium-rare, a thermometer should read 135°; medium, 140°; medium-well, 145°). Let stand for 5 minutes.
  2. Meanwhile, brush onions with oil. Grill, uncovered, over medium heat for 3-4 minutes on each side or until tender.
  3. Grill tortillas on each side until warm. Thinly slice steak. Top tortillas with steak, avocado and onions. Serve with sour cream, cilantro and lime wedges.

Nutrition Facts

2 tacos: 536 calories, 24g fat (6g saturated fat), 46mg cholesterol, 871mg sodium, 48g carbohydrate (4g sugars, 9g fiber), 31g protein.

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