Pan-Seared Beef with Garlic Mashed Potatoes and Herb Butter
Juicy pan-seared beef steaks served with creamy garlic mashed potatoes and topped with a fragrant herb butter sauce. This beef recipe, ready in about 40 minutes, pairs beef sirloin steaks, salt, black pepper for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 620 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.
Ingredients
- 4 pieces (6 oz each) beef sirloin steaks
- 1 tsp salt
- 1 tsp black pepper
- 2 tbsp olive oil
- 2 lbs, peeled and quartered russet potatoes
- 4 tbsp unsalted butter
- 4 cloves, minced garlic cloves
- 1/2 cup whole milk
- 2 tbsp, chopped fresh parsley
- 1 tbsp, chopped fresh thyme
- 1 tsp, chopped fresh rosemary
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Equipment for this recipe
Top-rated tools to make this recipe successfully.
Instructions
- Step 1: Place 2 lbs peeled and quartered russet potatoes into a large pot of salted water. Bring to a boil over high heat and cook for 15-18 minutes until fork-tender. Drain well.
- Step 2: While potatoes cook, season 4 beef sirloin steaks with 1 tsp salt and 1 tsp black pepper on both sides.
- Step 3: Heat 2 tbsp olive oil in a large skillet over medium-high heat. Add the steaks and cook for 4 minutes per side for medium-rare, or until desired doneness. Remove steaks and tent with foil to rest.
- Step 4: In a small saucepan, melt 4 tbsp unsalted butter over medium-low heat. Add 4 minced garlic cloves and cook gently for 1-2 minutes until fragrant but not browned. Remove from heat and stir in 2 tbsp chopped parsley, 1 tbsp chopped thyme, and 1 tsp chopped rosemary.
- Step 5: Mash the drained potatoes with 4 tbsp unsalted butter and 1/2 cup whole milk until creamy and smooth. Season with salt to taste.
- Step 6: Serve each steak with a generous scoop of garlic mashed potatoes and drizzle the herb garlic butter over the beef for rich flavor.
Frequently asked questions
How long does Pan-Seared Beef with Garlic Mashed Potatoes and Herb Butter take to make?
Total time is about 40 minutes (15 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 Pan-Seared Beef with Garlic Mashed Potatoes and 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 beef sirloin steaks from drying out.
Can I substitute ingredients in Pan-Seared Beef with Garlic Mashed Potatoes and 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 Mashed Potatoes and Herb 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 Pan-Seared Beef with Garlic Mashed Potatoes and Herb Butter?
International 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.
