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People are sometimes surprised when I tell them that steak has always had a place in my approach to healthy eating. Over the years, I’ve learned that I don’t have to give up the foods I enjoy—I just need to choose leaner cuts and pay attention to portion sizes.
Flank steak is one of my favorites for grilling. It’s naturally lean, full of beefy flavor, and becomes wonderfully tender after a simple marinade of red wine vinegar, garlic, oregano, and olive oil.
This recipe comes from one of my favorite WeightWatchers cookbooks, Weight Watchers Family Meals: 250 Recipes for Bringing Family, Friends, and Food Together (affiliate link). Served with grilled red onions and your favorite summer vegetables, it’s an easy meal that’s equally at home on a busy weeknight or when friends stop by for dinner.
Why You’ll Love This Recipe
- Simple pantry-ingredient marinade
- Lean, flavorful cut of beef
- Perfect for grilling season
- Ready in about 30 minutes (plus marinating time)
- Delicious with a variety of grilled vegetables
Ingredients & Notes
- Flank steak – A lean, flavorful cut that’s best sliced thinly across the grain.
- Red wine vinegar – Tenderizes the meat while adding brightness.
- Olive oil – Helps carry the flavors of the marinade.
- Garlic – Fresh garlic gives the steak wonderful flavor.
- Dried oregano – Adds a classic Mediterranean touch.
- Red onion – Grills beautifully alongside the steak.
How to Make this Marinated Grilled Flank Steak
- Marinate steak. In a large Ziploc bag, combine the vinegar, oil, oregano, garlic and pepper. Add the steak and seal the bag, squeezing out as much extra air as you can. Turn and squish the bag to coat the steak with the marinade. Refrigerate at least 1 hour and up to 4 hours. Turn the bag occasionally if you can.
- Grill steak. When you are ready to cook the steak, preheat your grill with medium-high heat. Remove the steak from the marinade and discard the marinade. Sprinkle the steak with 3/4 teaspoon salt. Spray the onion with olive oil non-stick spray and sprinkle with the remaining 1/4 teaspoon salt. Grill the steak about 6 minutes and then turn it over. Continue to grill until an instant read thermometer inserted into the side of the steak reads 145F degrees, about 6 more minutes.
- Rest the steak. Transfer the steak to a cutting board (affiliate link). Cover with foil to retain heat and let it rest about 10 minutes.
- Meanwhile cook onions. While the steak is resting, grill the onions, turning occasionally, until they are tender, about 8 or so minutes.Serve. Thinly slice the steak against the grain into 18 slices and place on a serving platter. Top with the onions.
Recipe Tips
- Marinate for at least an hour, but no more than about four hours for the best texture.
- Let the steak rest for 10 minutes before slicing to help keep it juicy.
- Always slice flank steak across the grain for maximum tenderness.
- Pair it with grilled asparagus, zucchini, peppers, tomatoes, or scallions for an easy summer meal.
Variations
- Substitute chicken breasts, chicken thighs, pork chops, or pork tenderloin.
- Try balsamic or sherry vinegar in place of the red wine vinegar.
- For a vegetarian option, use large portobello mushrooms or thick slices of eggplant with the same marinade.
Storage
Store leftover steak in an airtight container in the refrigerator for up to 4 days. Thin slices are delicious served cold over salads or tucked into wraps for lunch.
How Many Calories and WW Points?
According to my calculations, each serving has about 195 calories and 1 WW Point.
To see your WW Points for this recipe, track it in the WW App!
(You must be logged into WW on a smartphone or tablet.)
4 PointsPlus (Old plan)
If you’ve made this Grilled Marinated Flank Steak, please give the recipe a star rating below and leave a comment letting me know how you liked it. And stay in touch on Pinterest, Facebook, Instagram and Twitter for the latest updates.
Grilled Marinated Flank Steak Recipe
Equipment
Ingredients
- 3 tablepoons red wine vinegar
- 1 tablespoon olive oil
- 2 teaspoons dried oregano
- 1 large clove garlic, minced
- 1/4 teaspoon black pepper
- 1-1/2 pounds lean flank steak, trimmed of excess fat
- 1 teaspoon salt
- 1 large red onion, peeled and sliced into 1/4-inch thick rounds
Instructions
- In a large Ziploc bag, combine the vinegar, oil, oregano, garlic and pepper. Add the steak and seal the bag, squeezing out as much extra air as you can. Turn and squish the bag to coat the steak with the marinade. Refrigerate at least 1 hour and up to 4 hours. Turn the bag occasionally if you can.
- When you are ready to cook the steak, preheat your grill with medium-high heat.
- Remove the steak from the marinade and discard the marinade. Sprinkle the steak with 3/4 teaspoon salt. Spray the onion with olive oil non-stick spray and sprinkle with the remaining 1/4 teaspoon salt.
- Grill the steak about 6 minutes and then turn it over. Continue to grill until an instant read thermometer inserted into the side of the steak reads 145F degrees, about 6 more minutes.
- Transfer the steak to a cutting board (affiliate link). Cover with foil to retain heat and let it rest about 10 minutes.
- While the steak is resting, grill the onions, turning occasionally, until they are tender, about 8 or so minutes.
- Thinly slice the steak against the grain into 18 slices and place on a serving platter. Top with the onions.
Notes
(Must be logged into WW on a smartphone or tablet.) 4 PointsPlus (Old plan) Substitutions and Variations:
- Vegetarian – substitute portobello mushrooms or eggplant for the steak.
- Different meat – try boneless, skinless chicken breasts or thighs, pork chops or pork tenderloin.
- Different vinegar – balsamic or sherry vinegar would work well.
- Different vegetables – how about zucchini, bell peppers, tomatoes, whole scallions.
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
Source: Weight Watchers Family Meals: 250 Recipes for Bringing Family, Friends, and Food Together (affiliate link)
Hello,
Would this work in an air fryer?
Hi Nancy, I’ve never tried it the an air fryer. Would love to know how it turns out for you. ~Martha
Martha, how do you think apple cider vinegar would work with this recipe?
Thanks for sharing this easy recipe for grilled flank steak. It seems to be very delicious.