Slow Cooker Korean Beef

Name: Slow Cooker Korean Beef
Prep time: 10 min
Cook time: 8 h 30 min
Total time: 8 h 40 min
Cuisine: Asian, Korean
Ingredients: 1 cup beef broth; 1/2 cup reduced sodium soy sauce; 1/2 cup brown sugar (packed); 4 cloves garlic (minced); 1 tablespoon sesame oil; 1 tablespoon rice wine vinegar; 1 tablespoon freshly grated ginger; 1 teaspoon Sriracha (or more, to taste); 1/2 teaspoon onion powder; 1/2 teaspoon white pepper; 3 pound boneless beef chuck roast (cut into 1-inch cubes); 2 tablespoons cornstarch; 2 green onions (thinly sliced); 1 teaspoon sesame seeds