Grilled Herb-Marinated Flank Steak with Garlic Butter

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

Juicy flank steak marinated in fresh herbs and garlic, grilled to perfection and topped with a rich garlic butter sauce. This american-inspired beef ready in about 30 minutes pairs pounds flank steak, olive oil, fresh rosemary, chopped for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 450 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: 15 min Cook: 15 min Serves 4 American cuisine 450 cal/serving
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Ingredients

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Instructions

  1. Step 1: In a medium bowl, combine 3 tbsp olive oil, 2 tsp chopped rosemary, 2 tsp chopped thyme, 4 minced garlic cloves, 1 tsp salt, and 1/2 tsp black pepper; stir to create the marinade.
  2. Step 2: Place 1.5 pounds flank steak in a resealable plastic bag and pour the marinade over it, sealing tightly and refrigerate for at least 2 hours, preferably overnight, to tenderize and infuse flavors.
  3. Step 3: Preheat grill to medium-high heat (about 400°F). Remove steak from marinade and let excess drip off.
  4. Step 4: Grill steak for 4-5 minutes per side for medium-rare doneness, until the internal temperature reaches 130°F, allowing the meat to develop a nice crust.
  5. Step 5: Meanwhile, melt 4 tbsp unsalted butter in a small saucepan over low heat; add 2 minced garlic cloves and sauté for 1 minute until fragrant, then stir in 1 tbsp lemon juice and 1 tbsp chopped parsley.
  6. Step 6: Once steak rests for 5 minutes after grilling, slice thinly against the grain and drizzle the garlic butter over the sliced steak before serving.

Frequently asked questions

How long does Grilled Herb-Marinated Flank Steak with Garlic Butter take to make?

Total time is about 30 minutes (15 min prep + 15 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 Herb-Marinated Flank Steak with Garlic Butter?

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 pounds flank steak from drying out.

Can I substitute ingredients in Grilled Herb-Marinated Flank Steak with Garlic Butter?

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 Herb-Marinated Flank Steak with Garlic Butter 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 Herb-Marinated Flank Steak with Garlic Butter?

American beef 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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