Lemongrass Beef Noodle Soup

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

Clear broth infused with lemongrass and herbs, featuring tender beef and rice noodles. This vietnamese-inspired asian ready in about 45 minutes pairs Beef sirloin, Lemongrass, Garlic for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 420 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.

★ 4.1 (13 ratings) Prep: 20 min Cook: 25 min Serves 4 Vietnamese cuisine 420 cal/serving
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Ingredients

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Instructions

  1. Step 1: In a pot, bring 4 cups beef broth to a simmer over medium heat. Add 2 minced lemongrass stalks, 3 minced garlic cloves, and 1 tbsp minced ginger, and simmer for 10 minutes.
  2. Step 2: Add 8 oz thinly sliced beef sirloin to the broth and cook for 3-4 minutes until no longer pink. Remove beef and set aside.
  3. Step 3: Cook 8 oz rice noodles according to package instructions until al dente, then drain.
  4. Step 4: Return broth to a simmer and add 2 cups bean sprouts. Simmer for 2 minutes, then add cooked beef. Season with 1 tbsp fish sauce and 1/4 tsp salt.
  5. Step 5: Divide noodles among bowls, ladle soup over top, and garnish with chopped cilantro and a squeeze of lime juice from 1 lime.

Frequently asked questions

How long does Lemongrass Beef Noodle Soup take to make?

Total time is about 45 minutes (20 min prep + 25 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 Lemongrass Beef Noodle Soup?

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 beef sirloin from drying out.

Can I substitute ingredients in Lemongrass Beef Noodle Soup?

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 Lemongrass Beef Noodle Soup 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.

What goes well with Lemongrass Beef Noodle Soup?

Vietnamese asian like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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