Boil the pasta in a large pot of salted water following the package instructions. Once done, drain the pasta and rinse it with cold water. Transfer the cooled and drained pasta to a large bowl.
You can grill, boil, or use canned corn for this recipe. Grilling: Remove husks and silks from the corn. Preheat the grill to medium-high. Brush the corn with olive oil, salt, and pepper. Grill for about 15 minutes, rotating frequently until lightly charred. Let it cool, then slice off the kernels. Boiling: Remove husks and silks from the corn. Boil a large pot of water, then add the corn and cook for 7-10 minutes. Let it cool, then slice off the kernels. You can then roast them in a saucepan with a little oil until charred. Frozen or Canned: I suggest adding frozen or canned corn to a saucepan with a little oil and sautéing until charred.
Add the corn to the pasta.
Add in diced red onion, jalapeno, green onion and cilantro.
In a small bowl, whisk together mayonnaise, sour cream, lime juice, and seasonings. Stir until combined and pour over the pasta salad. Mix until the pasta salad is evenly coated. Top with Cotija cheese, extra cilantro, and a dash or two of Tajin seasoning for garnish.
Store in an airtight container for up to 5 days. This tastes even better the next day!