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brie taco with chopped steak, arugula, walnuts, creamy white sauce, and caramelized onions. Another taco in the back and front.

Steak and Brie Tacos with Caramelized Onions, Walnuts & Lemon Herb Crema

Ever had a taco that makes you pause mid-bite just to sigh happily? These Brie Tacos might just be that taco.
Prep Time 15 minutes
Cook Time 20 minutes
Total Time 35 minutes
Servings 4 Servings

Ingredients

FOR THE TACOS

  • 1 lb (454g) Steak (Sirloin, Flank, or Ribeye) cut into 1-inch cubes
  • 1 tbsp Extra Virgin Olive Oil or Avocado Oil
  • Salt and Black Pepper to taste
  • 1 medium Onion thinly sliced
  • 1 tbsp Butter
  • 4 oz Brie Cheese rind trimmed, cubed
  • ¼ cup Heavy Cream
  • ¼ cup Walnuts toasted and chopped
  • 1 cup Arugula
  • 8-10 Mini (Street Taco Size) Tortillas

FOR THE LEMON HERB CREMA

  • ½ cup Sour Cream or Greek Yogurt
  • 1 tbsp Lemon Juice
  • 1 tbsp Fresh Cilantro or Parsley finely chopped
  • Pinch of Salt

Instructions

  • In a skillet, melt the butter over medium-low heat. Add onions and a pinch of salt. Cook slowly, stirring occasionally, until soft, golden, and jammy — about 20–25 minutes. Transfer to a small bowl.
    cast iron skillet on a burner with caramelized onions.
  • In a small bowl, stir together sour cream, lemon juice, cilantro (or parsley), and a pinch of salt. Chill until ready to use.
    bowl of white creamy sauce with fresh herbs mixed in.
  • Heat oil in a large skillet over medium-high. Pat steak cubes dry and season with salt and pepper.
    raw cubed seasoned steak in a bowl.
  • Sear for 2–3 minutes per side until browned and cooked to your liking (don't overcrowd the pan, work in batches if you have to). Transfer steak to a paper towel lined plate.
    cooked cubed and seasoned steak on a paper towel lined plate.
  • Lower the heat to medium-low. In the same skillet, add brie and cream. Stir until melted into a smooth, creamy sauce. Season lightly with salt and pepper.
    creamy beige brie cheese sauce cooking in a cast iron skillet on a burner. hand with a rubber spatula stirring it.
  • Return the steak cubes to the skillet and toss until coated in the brie sauce.
    creamy brie steak bites in a cast iron skillet with a rubber spatula on a burner.
  • Warm tortillas. Spread a spoonful of lemon-herb crema on each one. Top with brie-coated steak bites, caramelized onions, a handful of arugula, and a sprinkle of toasted walnuts. Enjoy immediately while the steak is hot and the brie sauce is melty.
    chopped steak tacos with creamy brie cheese, walnuts, arugula, and a creamy white sauce on small tortillas.

Notes

Caramelized Onions Tip: These onions are a quick version to get that sweet, golden flavour. If they start to burn instead of caramelizing, just add a splash of water or broth. For the full step-by-step guide and all my tips, check out my caramelized onions recipe.
Quick version: For a simpler taco, skip the brie sauce and just melt a slice of brie on top of the steak and onions before adding the rest of the toppings.
Store separately if needed: Leftovers keep 2–3 days in the fridge; keep tortillas and toppings separate for best texture.

Nutrition

Serving: 3Tacos | Calories: 656kcal | Carbohydrates: 36g | Protein: 38g | Fat: 40g | Saturated Fat: 18g | Polyunsaturated Fat: 6g | Monounsaturated Fat: 12g | Trans Fat: 0.1g | Cholesterol: 139mg | Sodium: 723mg | Potassium: 652mg | Fiber: 3g | Sugar: 5g | Vitamin A: 781IU | Vitamin C: 5mg | Calcium: 233mg | Iron: 5mg
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