Roasted Pork Loin with stuffed spinach and mushroom

The recipe originally came from Whole Foods and I modified it a slight bit to add some asian flare :)

Ingredients:
1 boneless pork loin, 1 package of baby spinach, 1 king mushroom, 1 glove of garlic (chopped), 2 teaspoon Lee Kum Kee Chinese BBQ (Char Siu) Sauce

1. Split king mushroom in half length wise, then cut into thin slices. Cook in a little bit of olive oil for ~3-5 minutes until tender. Add spinach and chopped garlic and cook until soft.
2. Butterfly the pork loin. Spoon spinach and mushroom mix on top. Roll the pork loin closed and tie with kitchen string at 2-inch intervals.
3. Brush the outside with Chinese BBQ sauce and let sit for 10 minutes.
4. Brown all sides the stuffed pork loin in a pan with olive oil for a few minutes.
5. Bake in preheated oven at 350F for 1hr 20 mins.
6. Cut into thick slices and serve.