Beef Ramen Stir Fry

In a large skillet over medium heat, heat oil. Add onions, peppers, and broccoli and cook until tender, 10 minutes. Add ground beef and cook until no longer pink, 5 minutes more. Drain fat. Make sauce: Whisk together soy sauce, brown sugar, apple cider vinegar, Sriracha, and garlic. In a medium saucepan, bring water to a boil. Add cooked ramen noodles and cook until tender, 2 minutes. Drain. Add cooked ramen noodles to skillet and pour over sauce. Toss until completely combined, then garnish with green onions and serve.