Slow Cooker Pepper Steak

Name: Slow Cooker Pepper Steak
Prep time: 15 min
Cook time: 8 h
Total time: 8 h
Yield: 6
Ingredients: Ingredients; 1 1/2 lbs (680g) beef sirloin or flank steak, thinly sliced; 2 tablespoons olive oil (for searing); 1 large onion, sliced; 3 bell peppers (red, green, or yellow), sliced; 3 cloves garlic, minced; 1 can (15 oz) diced tomatoes, undrained; 1/4 cup soy sauce (low-sodium preferred); 2 tablespoons Worcestershire sauce; 1 tablespoon cornstarch (for thickening); 1 cup beef broth; 1 tablespoon brown sugar; 1 teaspoon ground ginger; Salt and pepper, to taste; Cooked rice (for serving)