Keto Mongolian Beef Stir-Fry with Sesame and Scallions

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

Quick stir-fried beef strips glazed in a savory soy-ginger sauce with sesame seeds and scallions, perfect for a low-carb keto dinner. This asian fusion-inspired beef (keto, low carb) ready in about 20 minutes pairs flank steak, thinly sliced, coconut aminos, sesame oil for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 350 calories and feeds 2, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 10 min Cook: 10 min Serves 2 Asian Fusion cuisine 350 cal/serving
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Ingredients

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Instructions

  1. Step 1: Heat 2 tbsp avocado oil in a large skillet over high heat until shimmering, about 1-2 minutes.
  2. Step 2: Add 10 oz thinly sliced flank steak, seasoned with 1/2 tsp salt and 1/4 tsp black pepper, and stir-fry for 3-4 minutes until browned but still tender.
  3. Step 3: Push steak to the side of the skillet; add 1 tbsp minced ginger and 2 minced garlic cloves, cooking for 30 seconds until fragrant.
  4. Step 4: Stir in 3 tbsp coconut aminos, 1 tbsp erythritol sweetener, 1 tbsp sesame oil, and 1/4 tsp red chili flakes; cook and toss everything together for 2 minutes until sauce thickens slightly and coats the beef.
  5. Step 5: Remove from heat and stir in 3 sliced scallions and 1 tbsp toasted sesame seeds.
  6. Step 6: Serve immediately, garnished with extra scallions if desired.

Frequently asked questions

How long does Keto Mongolian Beef Stir-Fry with Sesame and Scallions take to make?

Total time is about 20 minutes (10 min prep + 10 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Keto Mongolian Beef Stir-Fry with Sesame and Scallions?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep flank steak, thinly sliced from drying out.

Can I substitute ingredients in Keto Mongolian Beef Stir-Fry with Sesame and Scallions?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Keto Mongolian Beef Stir-Fry with Sesame and Scallions for a different number of people?

The recipe is written for 2 servings. Multiply each ingredient by (your serving target / 2). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

Is Keto Mongolian Beef Stir-Fry with Sesame and Scallions keto?

Yes — this recipe is tagged keto, low carb based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.

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