Apple Cider Pork Tenderloin with Easy Pan Sauce
Fall flavors don’t get better than this! This pork tenderloin transforms humble apple cider into a show-stopping dinner that’ll have everyone asking for seconds. The secret? A flavor-packed marinade that does double duty as an irresistible pan sauce.

The magic happens when the sweet-tangy marinade reduces down into a glossy sauce while the perfectly seared pork finishes in the oven. Each slice comes out incredibly tender and juicy, with a gorgeous caramelized crust that’ll make you look like a pro chef (even if it’s your first time making it!).

Ingredients

For the Marinade:
- 2 cups apple cider
- 3 tablespoons Dijon mustard
- 3 cloves garlic, smashed and peeled
- 1/2 cup brown sugar
- 1 teaspoon salt
For the Pork:
- 1 1/2 pound pork tenderloin
- 2 tablespoons extra virgin olive oil
- 2 teaspoons all-purpose flour

Steps

- Create the marinade by whisking together 2 cups apple cider, 3 tablespoons Dijon mustard, 1/2 cup brown sugar, and 1 teaspoon salt until sugar dissolves. Transfer to a large ziplock bag, add 3 smashed garlic cloves and pork tenderloin. Remove air, seal, and refrigerate for 8-24 hours. Flip bag occasionally for even marination.
- Remove pork from marinade 1 hour before cooking. Pat completely dry with paper towels (wet meat won’t sear properly). Reserve marinade for sauce. Let meat reach room temperature.
- Preheat oven to 400°F (200°C). Position rack in center.
- Heat 2 tablespoons olive oil in cast iron pan over medium-high heat until shimmering and nearly smoking (375-400°F/190-200°C if using thermometer). Add pork – it should sizzle immediately. If not, remove and let pan heat longer.
- Sear each side for 2-3 minutes until deep golden brown. Transfer to sheet pan and roast for 18-20 minutes or until internal temperature reaches 150°F (65°C) for medium.
- Meanwhile, make sauce: Pour reserved marinade into same pan over medium heat. Boil 5-10 minutes until reduced by half. Sprinkle flour through strainer while whisking. Return to boil until thickened. Season to taste.
- Rest pork 5-10 minutes before slicing into 1/2-inch medallions. Internal temperature will rise to 155-160°F (68-71°C).
- Serve sliced pork with strained sauce.

Smart Swaps
- Replace brown sugar with 1/4 cup maple syrup for natural sweetness
- Use apple butter instead of cider for intensified flavor
Make It Diabetes-Friendly
- Substitute brown sugar with 1/3 cup Swerve Brown (reduces carbs by 24g per serving)
- Use unsweetened apple cider (saves 12g sugar per cup)
- Serve with roasted vegetables instead of starchy sides
- Recommended portion: 4-5 oz cooked pork (21g protein, 3g carbs)
Pro Tips
- Score fat cap in diamond pattern for better rendering
- Let pan get properly hot – cold pan = no sear
- Don’t skip the resting period or juices will run out
- Use instant-read thermometer for perfect doneness