Quick, high-protein, and full of bold flavor — ready in under 30 minutes!
This sizzling stir-fry combines tender beef, garlic, chili, and spinach in a savory soy-based sauce. Perfect for busy weeknights or when you want a restaurant-quality meal at home.
Quick Overview
Servings: 4 | Prep Time: 10 mins | Cook Time: 15 mins | Total: 25 mins
Diet Type: High-Protein, Low-Carb, Meal-Prep Friendly
Ingredients
For the Stir-Fry:
- 1 lb beef sirloin, thinly sliced
- 2 tbsp vegetable oil
- 4 cloves garlic, minced
- 1 tsp red pepper flakes (adjust to taste)
- 2 cups fresh spinach, washed and dried
- 1 bell pepper (any color), sliced
- 1 medium onion, sliced
For the Sauce:
- 3 tbsp soy sauce
- 1 tbsp oyster sauce
- 1 tbsp cornstarch
- 1 tbsp water
- Salt and pepper, to taste
For Serving:
- Cooked rice or noodles
Instructions
-
Mix the Sauce:
In a small bowl, whisk together soy sauce, oyster sauce, cornstarch, and water. Set aside. -
Cook the Beef:
Heat 1 tbsp of oil in a large wok or skillet over medium-high heat.
Add sliced beef, season with salt and pepper, and stir-fry for 3–4 minutes until browned.
Remove and set aside. -
Build the Flavor Base:
In the same pan, heat the remaining oil.
Add minced garlic and red pepper flakes; stir-fry for about 30 seconds until fragrant. -
Add the Veggies:
Toss in sliced onions and bell pepper. Stir-fry for 3–4 minutes until tender-crisp. -
Combine Everything:
Return cooked beef to the pan.
Pour in the prepared sauce and stir to coat evenly.
Cook for 2–3 minutes until the sauce thickens and glazes the beef. -
Finish with Spinach:
Add spinach and stir just until wilted — about 1–2 minutes. -
Serve Hot:
Spoon over steamed rice or noodles and serve immediately.
Nutritional Information (per serving)
- Calories: 320
- Protein: 30g
- Net Carbs: 10g
- Fat: 18g
(Macros may vary depending on ingredients used.)
Tips & Variations
✅ Make it Vegetarian:
Substitute beef with tofu or tempeh and swap oyster sauce for soy or mushroom sauce.
✅ Boost the Veggies:
Add broccoli, snap peas, mushrooms, or carrots for more fiber and color.
✅ Add a Kick:
Use chili oil or sriracha for extra heat.
✅ Meal Prep Tip:
Cook and portion with brown rice or quinoa — it reheats beautifully for lunchboxes.
Why You’ll Love This Recipe
- High in protein for muscle recovery and satiety
- Ready in under 30 minutes
- Minimal cleanup, one-pan recipe
- Great balance of spicy, savory, and garlicky flavors
Storage & Reheating
- Fridge: Store leftovers in an airtight container for up to 3 days.
- Reheat: Warm in a skillet over medium heat with a splash of water or soy sauce.
- Freeze: Can be frozen for up to 1 month; thaw overnight before reheating.
FAQs
Q: Can I use ground beef instead of sirloin?
A: Yes! Ground beef works great — just drain excess fat before adding the sauce.
Q: What can I use instead of oyster sauce?
A: Try hoisin sauce, mushroom stir-fry sauce, or extra soy sauce with a pinch of sugar.
Q: How do I make it gluten-free?
A: Use tamari or coconut aminos instead of soy sauce.
Final Touch
This Chili Garlic Beef & Spinach Stir-Fry is the perfect high-protein comfort meal — spicy, savory, and loaded with greens. Serve it fresh from the pan and enjoy every bite with fluffy rice or noodles
