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Keto Beef Stir Fry for Fast Fat Burning - Simple, Satisfying, and Low-Carb

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Prep Time 10 minutes
Cook Time 15 minutes
Total Time 25 minutes
Servings: 4 servings
Ingredients Method

Ingredients
  

  • 1 pound (450 g) flank steak or sirloin, thinly sliced against the grain
  • 2 tablespoons avocado oil (or coconut oil/ghee)
  • 1 small zucchini, halved and sliced
  • 1 cup broccoli florets (small bite-size pieces)
  • 1 red bell pepper, thinly sliced
  • 3 cloves garlic, minced
  • 1 teaspoon fresh ginger, grated (or 1/2 teaspoon ground)
  • 2 green onions, sliced (whites and greens separated)
  • 1 tablespoon sesame seeds (optional, for garnish)
  • 3 tablespoons tamari or coconut aminos (low-sodium if preferred)
  • 1 tablespoon rice vinegar (unseasoned)
  • 1 tablespoon toasted sesame oil
  • 1 teaspoon fish sauce (optional, for umami)
  • 1/2 teaspoon red pepper flakes (adjust to taste)
  • 1/2 teaspoon garlic powder
  • 1/4 teaspoon black pepper
  • 1/2 teaspoon powdered erythritol or monk fruit (optional, balances saltiness)

Method
 

  1. Prep the beef: Freeze the steak for 20 minutes so it firms up, then slice thinly against the grain. Pat dry with paper towels for better browning.
  2. Mix the sauce: In a small bowl, whisk tamari/coconut aminos, rice vinegar, sesame oil, fish sauce, red pepper flakes, garlic powder, black pepper, and sweetener (if using). Set aside.
  3. Heat the pan: Use a large skillet or wok over medium-high heat. Add 1 tablespoon avocado oil and swirl to coat.
  4. Sear the beef: Add half the beef in a single layer. Cook 1–2 minutes per side until browned but not overdone. Remove to a plate. Repeat with remaining beef.
  5. Cook the veggies: Add remaining 1 tablespoon oil to the pan. Toss in broccoli and zucchini. Stir-fry 2–3 minutes until crisp-tender.
  6. Add aromatics: Stir in garlic, ginger, and the white parts of the green onions. Cook 30–45 seconds until fragrant.
  7. Combine and sauce: Return the beef to the pan. Pour in the sauce and toss. Cook 1–2 minutes to warm through and coat everything.
  8. Finish and serve: Remove from heat. Top with green onion tops and sesame seeds. Taste and adjust salt, pepper, or heat as needed.

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