Steps

• Start by taking your beef tenderloin and cutting it into uniform 1-inch cubes. This ensures even cooking, vital for achieving that delectable tender bite. Pat the cubes dry with paper towels to remove any excess moisture, enhancing the sear and flavor lock-in when they hit the pan.
• In a mixing bowl, toss the beef cubes with salt and pepper. Be generous but balanced; this seasoning forms the foundation of your dish's flavor. Allow the seasoned beef to sit for 5-10 minutes, helping the spices penetrate and marinate slightly.
• Heat your frying pan over medium-high heat. Add 1 tablespoon of butter and swirl to coat the pan. Once the butter is sizzling, add the beef cubes in batches, ensuring the pan isn't overcrowded. This helps each piece gain a beautiful sear. Cook for 2-3 minutes per side until well browned. Remove from the pan and set aside.
• Reduce the heat to medium and add the remaining butter to the pan. Once melted, introduce the minced garlic. Stir constantly as garlic can burn quickly. After 30 seconds to a fragrant minute, pour in the soy sauce, deglazing the pan. Mix everything well, scraping up any browned bits left from the beef.
• Add the cooked beef back into the pan, stirring to coat each piece richly with the garlic butter sauce. Finish by sprinkling fresh chopped parsley for an aromatic lift. Serve hot, perhaps alongside steamed vegetables or a warm rice dish, and enjoy!