Pan-Seared Beef with Garlic-Herb Butter

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

A tender flank steak seared to perfection and finished with a rich garlic-herb butter sauce, ideal for a quick keto dinner. This american-inspired beef (keto) ready in about 25 minutes pairs flank steak, olive oil, unsalted butter for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 650 calories and feeds 2, 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.

★ 4.0 (14 ratings) Prep: 10 min Cook: 15 min Serves 2 American cuisine 650 cal/serving
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Ingredients

Instructions

  1. Step 1: Pat the flank steak dry with paper towels and season both sides with 1/4 tsp salt and 1/8 tsp black pepper.
  2. Step 2: Heat 1 tbsp olive oil in a large skillet over medium-high heat until shimmering, about 2 minutes.
  3. Step 3: Add the flank steak and sear without moving for 4 minutes until a deep brown crust forms, then flip and sear for another 4 minutes for medium-rare (adjust time for desired doneness).
  4. Step 4: Remove the steak from the skillet and let rest for 5 minutes on a cutting board.
  5. Step 5: While the steak rests, add 2 tbsp unsalted butter, 2 minced garlic cloves, 1 tbsp fresh parsley, and 1 tbsp fresh chives to the skillet over medium heat, stirring constantly for 1 minute until the butter is melted and fragrant.
  6. Step 6: Slice the steak against the grain and drizzle with the garlic-herb butter.

Frequently asked questions

How long does Pan-Seared Beef with Garlic-Herb Butter take to make?

Total time is about 25 minutes (10 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 Pan-Seared Beef with Garlic-Herb 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 flank steak from drying out.

Can I substitute ingredients in Pan-Seared Beef with Garlic-Herb 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 Pan-Seared Beef with Garlic-Herb Butter for a different number of people?

The recipe is written for 2 servings. Multiply each ingredient by (your serving target / 2). 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.

Is Pan-Seared Beef with Garlic-Herb Butter keto?

Yes — this recipe is tagged keto based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.

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