Combine in the slow cooker: add the beef, broccoli florets, beef broth, soy sauce, oyster sauce, cornstarch, sugar, minced garlic, minced ginger, and sesame oil.
Stir to distribute the cornstarch evenly.
Cooking
Cover and cook on low for 6–7 hours or on high for 3–4 hours until the beef is fork-tender.
About 30 minutes before serving, gently stir in the ramen noodles, breaking them into large chunks if preferred.
Cook for the remaining time until the noodles are tender but not mushy, roughly 20–30 minutes depending on the noodle brand.
Serving
Ladle into bowls and garnish with sliced green onions.
Add sesame seeds or a drizzle of chili oil if desired.
Notes
Best enjoyed with toppings like extra sliced green onion, toasted sesame seeds, or a soft-boiled egg. For sides, consider kimchi or a simple side salad.