Pan-Seared Ribeye with Garlic Butter and Sauteed Mushrooms

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

A rich, high-fat keto dinner featuring a juicy ribeye steak pan-seared and topped with a luscious garlic herb butter, complemented by earthy sautéed mushrooms. This american-inspired keto (keto, low carb) ready in about 25 minutes pairs ribeye steak, unsalted butter, garlic cloves for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 850 calories and feeds 1, 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: 15 min Serves 1 American cuisine 850 cal/serving
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Ingredients

Instructions

  1. Step 1: Pat dry 12 oz ribeye steak and season evenly with 1 tsp salt and 1 tsp black pepper on both sides.
  2. Step 2: Heat 2 tbsp olive oil in a cast-iron skillet over medium-high heat until shimmering, about 2 minutes.
  3. Step 3: Add the ribeye steak and sear for 4 minutes without moving, then flip and cook for another 3 minutes for medium-rare.
  4. Step 4: While steak cooks, finely mince 3 garlic cloves and chop 1 tsp fresh thyme leaves.
  5. Step 5: Reduce heat to medium-low, add 2 tbsp unsalted butter, garlic, and thyme to the pan, and spoon the melted butter over the steak repeatedly for 1 minute to infuse flavor.
  6. Step 6: Remove steak from the pan and let rest on a plate tented with foil for 5 minutes.
  7. Step 7: In the same pan, add remaining 2 tbsp unsalted butter and 8 oz sliced cremini mushrooms, sauté over medium heat for 5 minutes until golden and tender, seasoning with a pinch of salt.
  8. Step 8: Serve steak topped with garlic herb butter alongside the sautéed mushrooms.

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Frequently asked questions

How long does Pan-Seared Ribeye with Garlic Butter and Sauteed Mushrooms 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 Ribeye with Garlic Butter and Sauteed Mushrooms?

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 ribeye steak from drying out.

Can I substitute ingredients in Pan-Seared Ribeye with Garlic Butter and Sauteed Mushrooms?

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 Ribeye with Garlic Butter and Sauteed Mushrooms for a different number of people?

The recipe is written for 1 servings. Multiply each ingredient by (your serving target / 1). 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 Ribeye with Garlic Butter and Sauteed Mushrooms keto?

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

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