In a large skillet, brown beef slices in the oil over medium-high heat. Depending on the size of your pan you may need to work in batches. Once all of the beef is browned, add the soy sauce to the beef and stir until liquid has evaporated. Remove beef from pan and keep warm.
To the skillet, add the vegetables, 1 3/4 cups beef broth, and the two seasoning packets from the ramen noodles. Stir and cook for 6-8 minutes until vegetables are tender, but still have some bite.
Meanwhile, in a saucepan, cook the ramen noodles according to package directions. Drain
Combine the remaining 1/4 cup beef broth with cornstarch to make a slurry. Add to skillet with vegetables. Stir until liquid has thickened.
Add beef and ramen to vegetables. Stir to combine and heat through.