Keto Stir-Fried Beef and Broccoli with Garlic Soy Sauce

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

A quick keto-friendly stir-fry featuring tender beef slices and crisp broccoli florets in a savory garlic soy sauce. This asian fusion-inspired keto (keto, low carb) ready in about 25 minutes blends flank steak, broccoli florets, sesame oil into a versatile sauce that lifts everything from grain bowls and roasted vegetables to grilled proteins — a small-batch staple worth keeping in the fridge. Each serving lands at about 350 calories and feeds 4, so a small batch covers several meals across the week without taking over the fridge. 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: 15 min Serves 4 Asian Fusion cuisine 350 cal/serving
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Ingredients

Instructions

  1. Step 1: Slice 1 lb flank steak thinly against the grain into strips about 1/4-inch thick. Toss with 1/2 tsp ground black pepper.
  2. Step 2: Heat 2 tbsp sesame oil in a large wok or skillet over medium-high heat until shimmering. Add the beef strips and stir-fry for 3-4 minutes until browned but still tender. Remove beef and set aside.
  3. Step 3: In the same pan, add 4 minced garlic cloves and 3 cups broccoli florets. Stir-fry for 4-5 minutes until broccoli is bright green and just tender.
  4. Step 4: Return the beef to the pan. Add 3 tbsp tamari, 1 tbsp rice vinegar, and 1/4 tsp red pepper flakes if using. Stir constantly for 2 minutes until sauce thickens slightly and coats beef and broccoli.
  5. Step 5: Remove from heat and garnish with 2 sliced green onions before serving immediately over cauliflower rice or alone for a keto meal.

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Frequently asked questions

How long does Keto Stir-Fried Beef and Broccoli with Garlic Soy Sauce take to make?

Total time is about 25 minutes (10 min prep + 15 min cook). A small batch typically covers several meals in the week — store as the recipe directs.

How do I store leftover Keto Stir-Fried Beef and Broccoli with Garlic Soy Sauce?

Transfer to an airtight jar and refrigerate for up to 5–7 days. Most sauces freeze well for up to 2 months — portion into small containers or freezer bags so you can thaw only what you need. Stir before serving; cream- or yogurt-based sauces may separate on standing.

Can I substitute ingredients in Keto Stir-Fried Beef and Broccoli with Garlic Soy Sauce?

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 Stir-Fried Beef and Broccoli with Garlic Soy Sauce for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). 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 Stir-Fried Beef and Broccoli with Garlic Soy Sauce 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.