Grilled Lemongrass Filet Mignon with Vietnamese Marinade

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

Tender filet mignon marinated in traditional Vietnamese spices and lemongrass, grilled to juicy perfection. This Vietnamese recipe, ready in about 22 minutes, pairs filet mignon, lemongrass stalks, finely chopped, 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 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: 10 min Cook: 12 min Serves 4 Vietnamese cuisine 320 cal/serving
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Ingredients

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Instructions

  1. Step 1: In a medium bowl, combine 2 finely chopped lemongrass stalks, 3 minced garlic cloves, 3 tbsp soy sauce, 2 tbsp fish sauce, 1 tbsp brown sugar, 1 tsp ground black pepper, 2 tbsp vegetable oil, and 1 tbsp lime juice to create the marinade.
  2. Step 2: Place 1 lb filet mignon pieces into a large resealable bag and pour the marinade over the meat. Seal and refrigerate for 24 hours to allow flavors to deeply penetrate.
  3. Step 3: Preheat grill to medium-high heat (about 400°F). Remove filet mignon from marinade, letting excess drip off, and grill for 4-5 minutes per side for medium rare, until grill marks form and meat is slightly charred.
  4. Step 4: Let the grilled filet mignon rest for 5 minutes before slicing against the grain to retain juices and tenderness.

Frequently asked questions

How long does Grilled Lemongrass Filet Mignon with Vietnamese Marinade take to make?

Total time is about 22 minutes (10 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 Grilled Lemongrass Filet Mignon with Vietnamese Marinade?

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 filet mignon from drying out.

Can I substitute ingredients in Grilled Lemongrass Filet Mignon with Vietnamese Marinade?

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 Grilled Lemongrass Filet Mignon with Vietnamese Marinade 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 Grilled Lemongrass Filet Mignon with Vietnamese Marinade?

Vietnamese vietnamese 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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