Pork
Powerproteinplates
Low-Carb Beef and Zucchini Noodle Stir-Fry with Chimichurri
By Powerproteinplates Test KitchenReviewed by Powerproteinplates Editorial TeamPublished Apr 24, 2026 · Updated May 11, 2026
South American
25 mins
high-proteinmuscle-buildingfitness-friendlygluten-freelow-carbeasy-recipesbalancedwhole-foodsquick-mealspost-workout
Delicious and easy Low-Carb Beef and Zucchini Noodle Stir-Fry featuring tender beef sirloin and fresh zucchini noodles tossed in a zesty South American chimichurri sauce. This high-protein, gluten-free, and balanced meal is perfect for muscle-building, post-workout recovery, and anyone following a low-carb diet.
Prep
15 min
Cook
10 min
Total
25 min
Servings
4
Difficulty
easy
Cuisine
South American
Ingredients
Servings
4
- 1 lb (450g) beef sirloin or flank steak, thinly sliced against the grain
- 3 medium zucchinis, spiralized into noodles
- 2 tbsp olive oil, divided
- 4 cloves garlic, minced
- 1 small red bell pepper, thinly sliced
- 1/2 tsp smoked paprika
- 1/4 tsp red pepper flakes (optional)
- Salt and freshly ground black pepper, to taste
- 1/2 cup fresh parsley leaves, tightly packed
- 1/2 cup fresh cilantro leaves, tightly packed
- 3 garlic cloves
- 1/4 cup red wine vinegar
- 1/2 cup extra virgin olive oil
- 1 tsp dried oregano
- 1/2 tsp crushed red pepper flakes
- Salt and black pepper to taste
- Juice of 1/2 lemon
Instructions
-
Prepare the chimichurri sauce: In a food processor or blender, combine parsley, cilantro, garlic cloves, red wine vinegar, dried oregano, crushed red pepper flakes, lemon juice, salt, and black pepper. Pulse until the herbs and garlic are finely chopped while retaining some texture.
-
While the processor is running, slowly drizzle in the extra virgin olive oil to emulsify the sauce. Adjust seasoning as needed. Set aside to let flavors meld.
-
Heat 1 tablespoon of olive oil in a large skillet or wok over medium-high heat.
-
Add the thinly sliced beef, seasoning with salt, black pepper, smoked paprika, and red pepper flakes. Stir-fry for 3-4 minutes until browned and cooked through. Remove beef and set aside.
-
In the same skillet, heat the remaining tablespoon of olive oil.
-
Add minced garlic and red bell pepper slices; cook for 1-2 minutes until fragrant and softened.
-
Add the zucchini noodles and toss quickly to combine. Stir-fry for 2-3 minutes until just tender but still with a firm bite to maintain texture.
-
Return the beef to the skillet and stir together for about 1 minute to warm through.
-
Remove from heat and plate the stir-fry. Spoon generous amounts of chimichurri sauce over the top.
-
Garnish with extra fresh parsley or cilantro if desired. Serve immediately.
Frequently Asked Questions
Reader questions and answers for this recipe will appear here.
To customize the Low-Carb Beef and Zucchini Noodle Stir-Fry with Chimichurri for your preferences or dietary needs, consider these substitutions that maintain its high-protein, low-carb benefits:
- Beef Alternatives: Substitute sirloin or flank steak with chicken breast or lean pork tenderloin for a leaner protein option.
- Vegetarian/Vegan Options: Replace beef with firm tofu or tempeh. Add legumes such as edamame or black beans to boost protein while keeping carbs controlled.
- Seafood Substitutes: Use shrimp or scallops for a quick-cooking, paleo- and keto-friendly alternative.
- Cooking Oil: Swap olive oil for avocado oil to add heart-healthy fats with a high smoke point.
- Noodle Variations: Replace zucchini noodles with shirataki noodles or spaghetti squash for allergy-friendly or textural variation while maintaining low-carbohydrate content.
- Herbs: If fresh parsley or cilantro is unavailable, dried herbs can be used, though fresh herbs provide superior flavor.
These options enable flexibility while preserving the dish’s nutritional benefits, supporting a healthy, high-protein, muscle-building, and low-carb lifestyle.
Protein Highlight
The Low-Carb Beef and Zucchini Noodle Stir-Fry is an excellent source of high-quality protein, primarily from lean beef sirloin. This complete protein delivers all essential amino acids necessary for muscle repair and growth, making it an ideal choice for fitness enthusiasts focused on muscle-building and post-workout nutrition.
Complemented by fresh zucchini noodles and a vibrant chimichurri sauce rich in antioxidants and healthy fats, this gluten-free, low-carb dish provides a nutrient-rich, balanced meal. It's quick to prepare and highly satisfying, supporting sustained energy and recovery without excess carbohydrates.
Goal Fit
This recipe is designed to support various fitness and wellness goals. Its high protein content from lean beef helps maximize muscle-building and facilitate post-workout recovery. By using zucchini noodles instead of traditional pasta, it maintains a low-carb profile perfect for those managing carbohydrate intake or following weight-loss plans.
Being naturally gluten-free and made with whole-food ingredients, it aligns well with fitness-friendly and anti-inflammatory diets. The fresh herbs and spices in the chimichurri add flavor and nutrient density without adding calories.
Additionally, the recipe’s simplicity and quick preparation time make it an excellent option for busy lifestyles seeking easy and quick meals that support balanced nutrition and healthy habits.
Whether aiming to enhance athletic performance, maintain lean muscle mass, or enjoy a wholesome meal, this stir-fry offers flavorful, nutrient-packed nourishment.
Protein Density
This Low-Carb Beef and Zucchini Noodle Stir-Fry emphasizes protein density by combining lean beef with low-carbohydrate zucchini noodles. The beef supplies a robust source of complete protein essential for muscle maintenance and recovery, while the zucchini noodles add fiber and volume without diluting the protein content.
The dish supports nutrient-dense, low-calorie eating, ideal for post-workout meals or weight management. It also provides an anti-inflammatory benefit from fresh herbs and healthy fats in the chimichurri sauce, delivering a well-rounded, heart-healthy profile.
Overall, the recipe balances high protein and low carbohydrates in a quick-to-prepare, gluten-free format, tailored to fitness-focused and health-conscious individuals.
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