Preheat the oven to 350°F
In a medium bowl, combine corn starch, soy sauce, brown sugar, hoisin sauce, vinegar, and sesame oil. Whisk to combine
In a small sauce pan on medium heat, add in bbq sauce to reduce until thickens
Prepare the pork loin on a sheet pan, seasoning with salt and pepper, garlic, and onion powder. Rub all over
Smother and brush half of the bbq sauce all over the pork loin, saving the other half until the end
Bake for 25 minutes then take out to brush the other half of the bbq sauce
Pop the pork loin back in the oven and bake for another 10 minutes or until internal temperature reaches 145°F
Sprinkle on top with sesame seeds and green onions
