Start the noodles - Get water boiling and cook the noodles like the package says. When they're done, drain and toss with that sesame oil so they don't stick together.
Make the sauce - Mix the beef base into the hot water until it dissolves. Add soy sauce and brown sugar. Stir and set aside.
Cook the beef - Heat oil in your biggest pan over high heat. Add beef and let it cook for 2-3 minutes without stirring. You want it golden brown. Take it out and set aside.
Cook vegetables - Same pan, cook onions for about 3 minutes until they're golden. Add carrots, cook 2 minutes. Add broccoli, cook 2 more minutes.
Add garlic - Throw in the garlic and cook for just 1 minute until it smells good.
Bring it together - Put the beef back in. Pour in your sauce and let it simmer for 2 minutes.
Add noodles - Toss in the cooked noodles and mix everything until the noodles are coated with sauce.
Eat it! - Serve while it's hot.