Creating Elote Street Corn Pasta Salad is simple if you follow these steps:

1. Cook Pasta: In a large pot of salted boiling water, cook the pasta according to package instructions until al dente. Drain and rinse under cold water to cool.
2. Prepare Corn: If using fresh corn, grill or sauté the corn kernels until slightly charred. For frozen corn, simply thaw and drain. For canned, rinse and drain before using.
3. Mix Vegetables: In a large bowl, combine the cooked pasta, corn, diced red bell pepper, chopped red onion, and cilantro.
4. Make Dressing: In a separate smaller bowl, whisk together the mayonnaise, sour cream, lime juice, chili powder, salt, and pepper until smooth.
5. Combine: Pour the dressing over the pasta and vegetable mixture. Toss gently until everything is evenly coated.
6. Add Cheese: Fold in the crumbled cotija cheese, reserving a little for garnish if desired.
7. Chill: Cover the salad and refrigerate for at least 30 minutes to allow the flavors to meld.
8. Serve: Before serving, taste and adjust seasoning if necessary. Garnish with additional cheese and lime wedges.

Following these steps will ensure that your Elote Street Corn Pasta Salad is a hit at the table.