Tired of the same old taco night? Elevate your dinner game with this incredibly tender and flavorful Mexican-Spiced Beef Tenderloin. It combines the zesty, bold flavors of your favorite tacos with the luxurious texture of perfectly cooked tenderloin. This recipe is surprisingly simple, delivering a restaurant-quality meal right from your own kitchen. Perfect for a special weeknight dinner or impressing guests, it’s a guaranteed showstopper!
Ingredients
• For the Tenderloin & Marinade
• 1 pound / 450g beef or venison tenderloin
• 4 cloves garlic, minced
• 1 tablespoon / 15 ml fresh lime juice
• 1 tablespoon / 15 ml MCT oil or avocado oil
• 4 teaspoons Taco Seasoning
• 1 tablespoon / 15g lard or other high-heat cooking fat
• 2 teaspoons fine sea salt
• For Serving
• 4 cups arugula
• 2 limes, cut into wedges
• Your favorite salsa
• Fresh guacamole
Instructions
1. Prepare the Marinade: In a baking dish or a large zip-top bag, combine the minced garlic, lime juice, oil, and taco seasoning. Add the tenderloin and turn to coat it completely in the mixture. Cover or seal and refrigerate for at least 30 minutes, or overnight for maximum flavor.
2. Preheat and Prep: Preheat your oven to 450°F / 232°C. Remove the tenderloin from the marinade and pat it dry. Season generously on all sides with the fine sea salt.
3. Sear the Tenderloin: Heat the lard in a large, oven-safe cast-iron skillet over medium-high heat until it shimmers. Carefully place the seasoned tenderloin in the hot skillet and sear for about 2 minutes per side, until a beautiful, deep-brown crust forms all around.
4. Oven-Finish: Using an oven mitt, transfer the entire skillet to the preheated oven. Roast for 7 to 8 minutes for a perfect medium-rare to medium finish. Use a meat thermometer for accuracy (130-135°F for medium-rare).
5. Rest and Serve: Remove the skillet from the oven and transfer the tenderloin to a cutting board. Let it rest for 10 minutes—this is crucial for juicy results! Slice the tenderloin against the grain. Serve the slices over a bed of fresh arugula with lime wedges, salsa, and guacamole on the side.
Nutritional Information
• Serving Size: 1 serving (approx. 1/4 of recipe)
• Calories: 365
• Protein: 25g
• Fat: 28g
• Net Carbohydrates: 2g
• (Note: This is an estimate and can vary based on exact used.)
Pro Tips
• Don’t skip the rest! Letting the tenderloin rest for 10 minutes before slicing is essential. It allows the juices to redistribute throughout the meat, ensuring every slice is moist and tender.
• Use a meat thermometer for a perfect cook. Aim for 130-135°F (54-57°C) for medium-rare before you pull it from the oven to prevent overcooking.
• Ensure your cast-iron skillet is very hot before adding the meat. A proper preheat creates a delicious, flavorful crust (the Maillard reaction) that seals in the juices.
FAQ
Q: How long should I marinate the beef tenderloin
A: For best results, marinate the tenderloin overnight to allow the flavors to fully penetrate the meat. If you’re short on time, a minimum of 30 minutes will still add a delicious zesty flavor.
Q: What is the best internal temperature for medium-rare tenderloin
A: For a perfect medium-rare, use a meat thermometer and pull the tenderloin from the oven when it reaches an internal temperature of 130-135°F (54-57°C). The temperature will rise slightly as it rests.
Q: Can I use a different cut of beef for this recipe
A: This recipe is optimized for the tenderness of beef or venison tenderloin. While you could use another cut like sirloin, you would need to adjust the cooking time significantly as other cuts are less tender and may require different cooking methods to achieve a similar result.
Q: What if I don’t have a cast-iron skillet
A: If you don’t have a cast-iron skillet, you can use any other large, oven-safe skillet. The key is to use a pan that can withstand high heat on the stovetop for searing and is also safe to transfer directly into a 450°F oven.
