Cumin-Spiced Beef Stir Fry with Bell Peppers and Zucchini

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

Tender strips of beef quickly stir-fried with vibrant bell peppers and zucchini, flavored with toasted cumin and fresh herbs for a satisfying Whole30 meal. This whole30-inspired beef (whole30, gluten free) ready in about 27 minutes pairs medium, thinly sliced red bell pepper, medium, cut into half-moons zucchini, olive oil 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 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: 15 min Cook: 12 min Serves 4 Whole30 cuisine 320 cal/serving
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Ingredients

Instructions

  1. Step 1: Heat 1 tbsp olive oil in a large skillet or wok over high heat until shimmering. Add 1 lb thinly sliced flank steak, 1 tsp ground cumin, and 1/2 tsp ground coriander. Stir-fry for 3-4 minutes until beef is browned but still tender. Remove beef and set aside.
  2. Step 2: In the same skillet, add remaining 1 tbsp olive oil. Toss in 3 minced garlic cloves and sauté for 30 seconds until fragrant.
  3. Step 3: Add 1 sliced red bell pepper, 1 sliced yellow bell pepper, and 1 sliced zucchini cut into half-moons. Stir-fry vegetables for 5-6 minutes until crisp-tender.
  4. Step 4: Return beef to skillet, sprinkle with 1 tsp sea salt and 1/2 tsp black pepper, and stir to combine all ingredients well.
  5. Step 5: Remove from heat, stir in 1/4 cup chopped fresh cilantro and drizzle 1 tbsp fresh lime juice over the stir fry. Serve immediately.

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Frequently asked questions

How long does Cumin-Spiced Beef Stir Fry with Bell Peppers and Zucchini take to make?

Total time is about 27 minutes (15 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 Cumin-Spiced Beef Stir Fry with Bell Peppers and Zucchini?

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 olive oil from drying out.

Can I substitute ingredients in Cumin-Spiced Beef Stir Fry with Bell Peppers and Zucchini?

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 Cumin-Spiced Beef Stir Fry with Bell Peppers and Zucchini 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 Cumin-Spiced Beef Stir Fry with Bell Peppers and Zucchini whole30?

Yes — this recipe is tagged whole30, gluten free, high protein based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.

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