Step 1: Preheat the Oven

1. Preheat Oven: Preheat your oven to 400°F (200°C).

Step 2: Prepare the Pork Tenderloin

1. Trim and Season: Trim any excess fat from the pork tenderloin and pat it dry with paper towels. Season generously with salt and pepper.
2. Sear the Pork: In an oven-safe skillet over medium-high heat, add olive oil. Sear the pork tenderloin for about 2-3 minutes on each side until browned.

Step 3: Make the Honey Garlic Glaze

1. Combine Ingredients: In a small bowl, whisk together the honey, soy sauce, minced garlic, Dijon mustard, apple cider vinegar, black pepper, and red pepper flakes (if using).
2. Add Glaze to Pork: Pour half of the glaze over the seared pork tenderloin, reserving the other half for later.

Step 4: Roast the Pork

1. Roast: Place the skillet with the pork in the preheated oven and roast for 15-20 minutes, or until the internal temperature reaches 145°F (63°C). Brush with the reserved glaze halfway through cooking.

Step 5: Rest and Serve

1. Rest: Once cooked, remove the pork from the oven and let it rest for 5-10 minutes before slicing. This helps retain the juices.
2. Serve: Slice the pork tenderloin and drizzle with any remaining glaze. Serve with your favorite sides.