Keto-Friendly Beef Stir Fry with Broccoli and Bell Peppers

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

A low-carb, high-protein stir fry featuring tender beef strips and vibrant vegetables tossed in a savory garlic sauce. This asian fusion-inspired keto (low carb) ready in about 22 minutes pairs sirloin steak, broccoli florets, red bell pepper for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 320 calories and feeds 4, so it slots cleanly into a low-carb week and pairs well with cauliflower rice or roasted green vegetables. 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 4 Asian Fusion cuisine 320 cal/serving
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Ingredients

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Instructions

  1. Step 1: Heat 1 tablespoon sesame oil in a large skillet or wok over high heat until shimmering. Add 1 pound thinly sliced sirloin steak and stir-fry for 2-3 minutes until browned but still tender. Remove the beef from the pan and set aside.
  2. Step 2: In the same skillet, add the remaining 1 tablespoon sesame oil, 3 cloves minced garlic, and 1 teaspoon grated fresh ginger. Sauté for 30 seconds until fragrant.
  3. Step 3: Add 3 cups broccoli florets and 1 thinly sliced red bell pepper to the skillet. Stir-fry for 4-5 minutes until the vegetables are crisp-tender.
  4. Step 4: Return the cooked beef to the skillet and pour in 3 tablespoons soy sauce and 1/4 teaspoon red pepper flakes. Toss everything together and cook for another 1-2 minutes until the sauce coats the ingredients and heats through.
  5. Step 5: Remove from heat, garnish with 2 chopped green onions and 1 tablespoon toasted sesame seeds before serving.

Frequently asked questions

How long does Keto-Friendly Beef Stir Fry with Broccoli and Bell Peppers 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-Friendly Beef Stir Fry with Broccoli and Bell Peppers?

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 sirloin steak from drying out.

Can I substitute ingredients in Keto-Friendly Beef Stir Fry with Broccoli and Bell Peppers?

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-Friendly Beef Stir Fry with Broccoli and Bell Peppers 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-Friendly Beef Stir Fry with Broccoli and Bell Peppers 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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