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+ servings
Sliced medium rare flank steak salad with marinated onions and avocado.
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5 from 1 vote

Steak Salad Recipe

This steak salad recipe is perfect on busy weeknights when you want something healthy and filling without a ton of prep. Grill flank steak on a stove top, then serve over baby spinach and arugula with tomatoes, avocado, marinated onions, and marcona almonds. GF, DF, Whole30
Prep15 mins
Cook10 mins
Resting Time10 mins
Total35 mins
Course: Lunch
Cuisine: Dinner
Keyword: how to cook flank steak, marinated onions, spinach salad recipe
Servings: 2 servings
Calories: 566kcal
Author: Ari Laing


Grill pan or grill


  • ¾ lb flank steak
  • 2-3 tsp Kosher salt
  • ¼ tsp freshly ground black pepper
  • 2 Tbsp avocado oil grapeseed oil, or other light, neutral oil
  • 2.5 oz baby spinach and arugula (sold together in a combined package)
  • 1 medium tomato chopped
  • 1 ripe avocado peeled and cut into small pieces
  • 2 Tbsp marcona almonds
  • ¼ tsp Flaky sea salt
  • Marinated onioned recipe linked below


  • Bring the steak to room temperature, then season generously on both sides with Kosher salt and black pepper. Heat a grill pan over high heat for at least 5 minutes.
  • Cook the flank steak. When very hot, drizzle the pan with 2 Tbsp avocado oil. Add the flank steak, then cook for 3-5 minutes per side, or until an internal temperature of 135F is reached (for medium rare). Set aside to rest for 10 minutes before slicing while you assemble the salad.
  • Assemble the salad. First, season the chopped tomatoes with ¼ tsp flaky sea salt. Set aside. Divide spinach and arugula mixture between two large plates or bowls. Top each with half of the sliced avocado, 1 Tbsp each of the marcona almonds, and a few tablespoons of marinated onions. Divide the tomatoes and place on top.
  • Slice the steak. Use a sharp chef's knife to slice the steak into ¼ - ½" thick slices, cutting against the grain. Place half of the steak on each salad, then drizzle both with reserved marinated onion dressing. Serve immediately!


  • Marinated onions recipe -- for this recipe you'll need extra virgin olive oil, red wine vinegar, balsamic vinegar, dried oregano, and 1 small red onion.


Calories: 566kcal | Carbohydrates: 7g | Protein: 40g | Fat: 42g | Saturated Fat: 8g | Polyunsaturated Fat: 5g | Monounsaturated Fat: 27g | Cholesterol: 102mg | Sodium: 3904mg | Potassium: 1008mg | Fiber: 3g | Sugar: 3g | Vitamin A: 3847IU | Vitamin C: 18mg | Calcium: 113mg | Iron: 4mg
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