Cook the rotini pasta according to package instructions until al dente. Drain and set aside.
In a large skillet, brown the ground beef over medium heat until fully cooked, about 5-7 minutes.
Drain excess fat from the skillet.
Add taco seasoning to the meat, stirring to coat evenly.
Pour in the can of diced tomatoes and beef broth, then bring to a simmer.
Stir in the black beans and corn, cooking for an additional 5 minutes.
Combine the cooked pasta with the beef mixture, stirring well to combine.
Sprinkle shredded cheese on top, allowing it to melt.
Remove from heat and let it sit for a few minutes.
Serve warm, garnished with cilantro and avocado slices.