Keto Beef Stir-Fry with Broccoli and Mushrooms

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

A savory stir-fry combining tender beef strips with fresh broccoli and mushrooms, infused with garlic and soy sauce — perfect for a low-carb keto dinner. This asian-inspired keto (keto, low carb) ready in about 22 minutes pairs thinly sliced beef sirloin, broccoli florets, sliced white mushrooms for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 390 calories and feeds 3, 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: 12 min Serves 3 Asian cuisine 390 cal/serving
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Ingredients

Instructions

  1. Step 1: Heat 1 tbsp olive oil in a large skillet or wok over medium-high heat until hot but not smoking. Add 12 oz thinly sliced beef sirloin and season with 1/2 tsp salt and 1/4 tsp black pepper. Stir-fry for 3-4 minutes until browned but still tender, then remove beef and set aside.
  2. Step 2: In the same skillet, add 1 tbsp sesame oil and 3 minced garlic cloves, sautéing for 30 seconds until fragrant.
  3. Step 3: Add 2 cups broccoli florets and 1 cup sliced white mushrooms, stir-frying for 5 minutes until vegetables are tender-crisp.
  4. Step 4: Return the cooked beef to the skillet and pour in 2 tbsp coconut aminos or soy sauce. Toss everything together and cook for an additional 2 minutes until the sauce thickens slightly and coats the ingredients.
  5. Step 5: Serve hot, garnished with an optional sprinkle of sesame seeds if desired.

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Frequently asked questions

How long does Keto Beef Stir-Fry with Broccoli and Mushrooms take to make?

Total time is about 22 minutes (10 min prep + 12 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 Stir-Fry with Broccoli and Mushrooms?

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 beef sirloin from drying out.

Can I substitute ingredients in Keto Beef Stir-Fry with Broccoli and Mushrooms?

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 Stir-Fry with Broccoli and Mushrooms for a different number of people?

The recipe is written for 3 servings. Multiply each ingredient by (your serving target / 3). 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 Stir-Fry with Broccoli and Mushrooms 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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