How long to cook pork tenderloin?

HotbotBy HotBotUpdated: June 27, 2024

Pork tenderloin is a versatile and delicious cut of meat, perfect for a variety of cooking methods. Understanding the correct cooking time is crucial to achieving a tender and juicy result. Several factors influence the cooking time, including the cooking method, the size of the tenderloin, and whether it is being cooked with other ingredients. Let's delve into the specifics.

Cooking Methods and Their Impact on Time

Oven Roasting

Oven roasting is a popular method for cooking pork tenderloin. Preheat your oven to 425°F (220°C). For a pork tenderloin weighing between 1 to 1.5 pounds, the cooking time generally ranges from 20 to 25 minutes. It's crucial to use a meat thermometer to check the internal temperature, aiming for 145°F (63°C). This ensures the meat is cooked through while remaining juicy and tender.


Grilling pork tenderloin adds a smoky flavor that's hard to beat. Preheat your grill to medium-high heat. Sear the tenderloin on all sides for about 2-3 minutes per side. After searing, reduce the heat to medium and continue grilling for about 20-25 minutes. Again, use a meat thermometer to confirm it has reached 145°F (63°C).

Slow Cooking

Slow cooking is ideal for busy days or when you want to infuse the pork with additional flavors. Place the pork tenderloin in the slow cooker with your choice of marinades or seasonings. Cook on low for 6 to 8 hours or on high for 3 to 4 hours. The internal temperature should still be checked, though, ensuring it reaches 145°F (63°C).

Factors Affecting Cooking Time

Size and Weight of the Tenderloin

The size and weight of the pork tenderloin significantly affect the cooking time. A larger, thicker tenderloin will naturally take longer to cook through than a smaller, thinner one. Adjust cooking times accordingly based on the size, always prioritizing the internal temperature over the clock.

Initial Temperature of the Meat

If your pork tenderloin starts at room temperature, it will cook faster than one taken directly from the refrigerator. Letting the meat sit at room temperature for about 30 minutes before cooking can help ensure more even cooking.

Cooking with Additional Ingredients

Cooking pork tenderloin with additional ingredients like vegetables or sauces can extend the cooking time. The extra moisture and density from these ingredients may require additional time for the tenderloin to reach the safe internal temperature.

Using a Meat Thermometer

A meat thermometer is an essential tool for cooking pork tenderloin to perfection. Insert the thermometer into the thickest part of the meat. For the most accurate reading, avoid touching bone or fat. A digital instant-read thermometer is highly recommended, as it provides quick and precise measurements.

Resting Time

After cooking, let the pork tenderloin rest for at least 5 minutes before slicing. This allows the juices to redistribute throughout the meat, ensuring a moist and flavorful result. During this resting period, the internal temperature can rise by a few degrees, which is why removing the meat from the heat at an internal temperature of 145°F (63°C) is ideal.

Common Mistakes to Avoid


One of the most common mistakes is overcooking the pork tenderloin, which can result in a dry and tough texture. Always rely on a meat thermometer rather than cooking times alone to avoid this pitfall.

Not Searing Properly

Searing the pork tenderloin before roasting or grilling helps to lock in flavors and juices. Skipping this step can lead to a less flavorful dish. Ensure you sear the meat on all sides for the best results.

Ignoring Resting Time

As mentioned earlier, resting the meat after cooking is crucial. Cutting into the tenderloin immediately can cause the juices to run out, leading to a dry final product. Patience pays off with a juicier, more flavorful tenderloin.

Cooking Variations

Stuffed Pork Tenderloin

Stuffing the pork tenderloin adds complexity and flavor. Common stuffing ingredients include breadcrumbs, herbs, cheese, and vegetables. When stuffed, the cooking time may increase slightly, so monitor the internal temperature closely. Aim for the same 145°F (63°C) internal temperature, and consider using a probe thermometer that can stay in the meat throughout the cooking process.

Marinated Pork Tenderloin

Marinating the pork tenderloin can add additional flavors and tenderize the meat. However, marinated tenderloins may cook slightly faster due to the added moisture. Regardless, always check the internal temperature to ensure safe consumption.

Rarely Known Tips for Perfect Pork Tenderloin


Brining the pork tenderloin before cooking can enhance its moisture and flavor. A simple brine can be made with water, salt, sugar, and optional seasonings. Soak the tenderloin in the brine for 1-2 hours before cooking for the best results.

Using a Cast Iron Skillet

If oven-roasting, consider starting the tenderloin in a cast iron skillet. The skillet can go from stovetop to oven, allowing you to sear the meat first and then finish cooking it in the oven. This method helps to develop a flavorful crust while ensuring even cooking.

Butter Basting

For an extra burst of flavor, try butter basting your pork tenderloin during the last few minutes of cooking. Melt some butter with garlic and herbs in a pan, then spoon the mixture over the tenderloin. This adds richness and depth to the flavor profile.

Cooking pork tenderloin to perfection involves understanding the right cooking methods, times, and temperatures. Whether you choose to roast, grill, or slow cook, the key is to monitor the internal temperature closely and allow the meat to rest after cooking. By avoiding common mistakes and experimenting with variations like stuffing or marinating, you can elevate this simple cut of meat to a gourmet experience. The journey to the perfect pork tenderloin is as much about the process as it is about the final product, offering endless opportunities for culinary creativity.

Related Questions

What temp is pork done?

Cooking pork to the correct temperature is crucial for both food safety and achieving desirable taste and texture. The USDA recommends cooking pork to an internal temperature of 145°F (63°C), followed by a three-minute rest period. This ensures the meat is safe to eat while remaining juicy and tender.

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How to cook pork tenderloin?

Pork tenderloin is a lean, tender cut of meat that is versatile and relatively easy to cook. Its mild flavor makes it an excellent canvas for a variety of seasonings and cooking methods. Unlike fattier cuts, pork tenderloin cooks quickly and can easily become dry if overcooked. Therefore, achieving the perfect balance of flavor and moisture is key.

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