Cooking a frozen pork loin filet to perfection can seem daunting, but it’s actually quite simple with the right techniques. The cooking time will depend on a few key factors like the size and shape of the filet, whether it’s boneless or bone-in, and what temperature you want to cook it to. Follow these tips for perfect pork loin every time.
Thawing
The first step is thawing the pork properly. Never cook frozen pork directly from the freezer, as it will cook unevenly. Here are a few safe ways to thaw:
- Refrigerator thawing: Place the frozen filet in the fridge for 24-48 hours. This is the longest but safest method.
- Cold water thawing: Submerge the vacuum sealed filet in cold water, changing the water every 30 minutes until thawed. Takes 2-3 hours.
- Microwave thawing: Use the defrost setting to thaw for 4-5 minutes per pound, flipping halfway. This is the fastest method.
Size and Shape
Pork loin filets can range from 1-3 pounds typically. The larger the filet, the more time it will need to cook through. Here are some general size guidelines:
- 1 pound filet: 30-45 minutes baked
- 2 pound filet: 50-60 minutes baked
- 3 pound filet: 60-75 minutes baked
The shape also affects cooking time. Filets that are wide and thick will take longer than a long, slender cut. Also note that bone-in cuts cook slower than boneless.
Oven Temperature
Pork should be cooked to an internal temperature of 145°F for food safety. The oven temperature you roast at determines how long this takes. Use these oven temps for reference:
- 300°F oven: 45-60 minutes (low and slow)
- 350°F oven: 35-50 minutes
- 400°F oven: 25-40 minutes
- 425°F oven: 20-35 minutes (hot and fast)
In most cases, a 350°F oven will give you the juiciest, evenly cooked pork loin. Combine that with the size guidelines above to estimate your cooking time.
Methods of Cooking
There are several methods you can use for cooking a pork loin filet:
Oven Roasted
This is the most common cooking method. Simple season the pork and roast it uncovered in a 350°F oven until it reaches 145°F internally. A 2 pound filet takes around 50-60 minutes.
Grilled
Grilling imparts a delicious smoky flavor. Cook over indirect medium heat for 20-25 minutes per pound until it reaches temperature. Let rest 5 minutes.
Slow Cooker
For an effortless meal, cook on low for 7-8 hours or high for 4-5 hours until tender.
Sous Vide
Immersion cooking in a water bath at 140°F for 1-4 hours cooks the pork to tender perfection.
Pan Searing
Brown the pork on all sides in a hot skillet, then finish cooking through in a 300°F oven until 145°F internally. Quick and flavorful.
Resting
Always let pork loin rest for 5-10 minutes once removed from the oven or grill. This allows the juices to redistribute evenly throughout the meat for a moist and tender filet.
How to Tell When It’s Done
These are some ways to test for doneness when cooking pork loin:
- Use an instant read meat thermometer, the pork is done at 145°F.
- Cut into the center to check for white or slightly pink interior with no redness.
- Check for clear juices running from the filet when pierced with a knife.
- The exterior should be nicely browned.
Cooking Times Summary
Refer to this quick cooking time chart for frozen pork loin filets based on the size and oven temperature:
| Filet Weight | 300°F Oven | 350°F Oven | 400°F Oven | 425°F Oven |
|---|---|---|---|---|
| 1 pound | 45-60 minutes | 35-50 minutes | 25-40 minutes | 20-35 minutes |
| 2 pounds | 60-75 minutes | 45-60 minutes | 35-50 minutes | 30-45 minutes |
| 3 pounds | 75-90 minutes | 60-75 minutes | 45-60 minutes | 35-50 minutes |
Tips for the Best Results
- Always thaw pork completely before cooking for even heating.
- Bring to room temperature before roasting for faster, more even cooking.
- Pat dry before cooking to help browning.
- Brush with oil or rub with spices/herbs to add flavor.
- Use a meat thermometer to avoid overcooking.
- Let rest before slicing for juicier meat.
- Slice against the grain for tenderness.
Sample Cooking Methods
Here are some example recipes and cooking instructions for frozen pork loin filets using popular prep methods:
Oven Roasted with Herbs
1. Thaw 2 pound frozen pork loin filet for 24-48 hours in the refrigerator.
2. Remove pork from fridge and allow to come to room temperature, about 30 minutes.
3. Pat dry pork loin and rub all over with 1 tbsp olive oil. Season with 1 tsp each dried thyme, rosemary, sage.
4. Roast in a 350°F oven for 50-60 minutes until internal temperature reaches 145°F.
5. Let rest 10 minutes before slicing and serving.
Maple Glazed Pork Loin
1. Thaw 3 pound bone-in pork loin filet in the refrigerator for 48 hours.
2. Make a maple glaze by combining 1/2 cup maple syrup, 2 tbsp brown sugar, 2 tbsp apple cider vinegar and 1/4 tsp cayenne.
3. Pat pork dry and coat with a thin layer of glaze. Roast at 400°F for 45-60 minutes until 145°F.
4. In the last 10 minutes of cooking, brush with another layer of glaze and return to oven.
5. Let rest 10 minutes, then slice and serve.
Slow Cooker Pulled Pork
1. Thaw 2 pound pork loin filet in the refrigerator for 48 hours.
2. Place pork in slow cooker and rub all over with 1 tbsp chili powder, 1 tsp cumin, 1 tsp garlic powder, S&P.
3. Cook on low heat setting for 7-8 hours.
4. Remove pork, shred with two forks. Toss with favorite BBQ sauce.
5. Serve on buns for easy pulled pork sandwiches.
Conclusion
Cooking frozen pork loin filet requires proper thawing and cooking method based on the size, shape and bone-in or boneless variety. Figure around 35-50 minutes per pound in a 350°F oven for the juiciest, evenly cooked pork. Always use a meat thermometer to ensure the pork reaches the safe internal temp of 145°F. Resting before slicing and adding flavorful herbs, spices or glazes can take this lean cut to the next level. Follow these tips for perfect pork loin every time.