Cook the Pulled Beef:
Heat olive oil in a skillet over medium heat. Sear the beef chuck roast on all sides until browned, about 3-4 minutes per side.
Transfer the beef to a slow cooker or Dutch oven.
Add chopped onion, minced garlic, soy sauce, hoisin sauce, grated ginger, beef broth, brown sugar, and rice vinegar. Season with salt and pepper.
Cover and cook on low for 6-8 hours (or high for 3-4 hours) until the beef is tender and easily shreds with a fork.
Once cooked, shred the beef using two forks and set aside.
Prepare the Ramen Noodles:
Cook the ramen noodles according to package instructions. Drain and set aside.
Assemble the Ramen:
Divide the cooked ramen noodles into serving bowls.
Pour the beef broth over the noodles, followed by the shredded pulled beef.
Top with sliced mushrooms, spinach or bok choy, green onions, and a soft-boiled egg (if using).
Drizzle with sesame oil for added flavor and richness.
Serve and Enjoy:
Serve the ramen hot, garnished with additional green onions or sesame seeds if desired. Enjoy your hearty and flavorful pulled beef ramen!