Keto Beef and Spinach Stir-Fry with Sesame

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

Tender strips of beef stir-fried with fresh spinach and toasted sesame seeds create a quick, flavorful keto-friendly dish. This asian-inspired keto (keto, low carb) ready in about 20 minutes pairs thinly sliced flank steak, sesame oil, fresh spinach for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 400 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 cuisine 400 cal/serving
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Ingredients

Instructions

  1. Step 1: Heat 2 tbsp sesame oil in a large wok or skillet over high heat until shimmering but not smoking.
  2. Step 2: Add 8 oz thinly sliced flank steak and stir-fry for 3-4 minutes until browned and just cooked through.
  3. Step 3: Add 2 minced garlic cloves and 1 tsp grated ginger to the pan, cooking for 30 seconds until fragrant.
  4. Step 4: Toss in 4 cups fresh spinach and 2 tbsp soy sauce, stirring constantly for 2 minutes until the spinach wilts but remains bright green.
  5. Step 5: Sprinkle 1 tbsp toasted sesame seeds and 1/4 tsp red pepper flakes (if using) over the stir-fry and mix well.
  6. Step 6: Remove from heat and garnish with 2 thinly sliced green onions before serving.

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Frequently asked questions

How long does Keto Beef and Spinach Stir-Fry with Sesame 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 Beef and Spinach Stir-Fry with Sesame?

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 thinly sliced flank steak from drying out.

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

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 Beef and Spinach Stir-Fry with Sesame 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 Beef and Spinach Stir-Fry with Sesame 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.