Pan-Seared Beef Steak with Garlic Butter and Mushrooms

By AislePrompt Editorial · Published 2026-04-19 · Updated 2026-04-19

Juicy beef steak seared to perfection and finished with a rich garlic butter sauce, accompanied by sautéed mushrooms for a classic keto meal. This American-inspired beef recipe (keto), ready in about 20 minutes, pairs beef steak, butter, garlic for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 660 calories and feeds 1, so it slots cleanly into a low-carb week and pairs well with cauliflower rice or roasted green vegetables. 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

• 8 oz, ribeye or sirloin beef steak
• 2 tbsp butter
• 2 cloves, minced garlic
• 4 oz, sliced mushrooms
• 1 tsp olive oil
• 1/2 tsp salt
• 1/4 tsp black pepper

The cast-iron skillet we’d sear this in → Best Cast Iron Skillets for 2026: Top Picks + Buying Guide

Instructions

1. Step 1: Pat 8 oz beef steak dry with paper towels, then season with 1/2 tsp salt and 1/4 tsp black pepper.
2. Step 2: Heat 1 tsp olive oil in a skillet over medium-high heat until shimmering.
3. Step 3: Add beef steak and cook for 3-4 minutes per side for medium-rare, or until desired doneness.
4. Step 4: Remove steak and let rest for 5 minutes.
5. Step 5: In the same skillet, melt 2 tbsp butter over medium heat, then add 2 minced garlic cloves and cook for 30 seconds until fragrant.
6. Step 6: Add 4 oz sliced mushrooms and cook for 5 minutes until tender and golden.
7. Step 7: Slice steak and serve with mushroom sauce.