Spiced Keto Beef and Vegetable Stir-Fry

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · Published 2026-05-01 · Updated 2026-05-01

A quick and hearty stir-fry featuring marinated beef strips and colorful low-carb vegetables with a fragrant spice blend. This asian-inspired keto (keto, high protein) ready in about 25 minutes pairs beef sirloin, thinly sliced, olive oil, garlic cloves, minced for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 320 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.

Ingredients

• 12 oz beef sirloin, thinly sliced
• 2 tbsp olive oil
• 3 garlic cloves, minced
• 1 tbsp ginger, grated
• 1 medium red bell pepper, sliced into strips
• 1 medium zucchini, sliced into half-moons
• 3 tbsp soy sauce (or coconut aminos)
• 1 tsp ground cumin
• 1/2 tsp smoked paprika
• 1/4 tsp red chili flakes
• 2 tbsp fresh cilantro, chopped
• to taste salt
• to taste black pepper

Instructions

1. Step 1: Toss 12 oz thinly sliced beef sirloin with 3 tbsp soy sauce, 1 tsp ground cumin, 1/2 tsp smoked paprika, and 1/4 tsp red chili flakes. Let marinate for 10 minutes.
2. Step 2: Heat 2 tbsp olive oil in a large skillet over medium-high heat until shimmering. Add 3 minced garlic cloves and 1 tbsp grated ginger, sautéing for 30 seconds until fragrant.
3. Step 3: Add marinated beef to the skillet and cook for 3-4 minutes, stirring frequently, until beef is browned but still tender.
4. Step 4: Add 1 sliced red bell pepper and 1 sliced zucchini to the skillet. Stir-fry for another 4-5 minutes until vegetables are crisp-tender.
5. Step 5: Season with salt and black pepper to taste, then sprinkle 2 tbsp chopped fresh cilantro over the top before serving.