Trim and slice the beef into strips or bite-sized pieces. Place the beef in a bowl and add the cornstarch and toss to combine.
Heat the 2 tablespoon of vegetable oil in a large cast iron skillet.
Add the beef and cook until browned; about 2 to 4 minutes.
Next add the frozen mixed vegetables and the sliced zucchini.
Continue cooking until the beef is cooked through and the vegetables are cooked.
Add the sauce and allow it to cook in the pan with the beef and vegetables until it thickens slightly.
Cook the Ramen noodles according to the package directions only do NOT add the seasoning packet.
Once the noodles are cooked and drained, add them to the beef and vegetable mixture. Toss to combine everything making sure the sauce is getting on the noodles as well.
Serve immediately.
Video
Notes
Make sure you don't use the seasoning packet that comes with the package of noodles.