Bring a medium pot of generously salted water to a boil.
Add the macaroni and cook 2 minutes less than the package instructions.
When 1 minute is left on your timer add in the frozen corn.
Remove ½ cup of cooking liquid & drain the pasta.
In the same pot, add the plant milk and butter amounts as directed on the box, along with the cheese packet and fajita mix. Whisk to create a sauce.
Stir in black beans and red pepper, pasta, and corn, until everything is combined. Bring back up to a boil, add in the reserved pasta cooking water as needed to get a creamy dish, and immediately remove from the heat.