Bring a large pot of salted water to a boil. Cook the rotini pasta according to package directions until al dente. Drain the pasta, rinse under cold water to stop the cooking, and drain well. Transfer the cooled pasta to a large serving bowl and set aside.
2 cups (200 g) dry rotini pasta
While the pasta cooks, prepare the remaining ingredients. Heat the oil in a skillet over medium heat. Add the corn and cook for 5 to 7 minutes, stirring occasionally, until the corn is heated through and lightly golden. Transfer the cooked corn to the bowl with the pasta.
1 tbsp (15 ml) avocado oil, 3 cups (~340 g / 12 oz) frozen corn
In a small mixing bowl, combine the mayonnaise, sour cream, chili powder, garlic powder, paprika, ground cumin, lime juice, salt, and black pepper. Whisk until smooth and fully combined.
½ cup (120 g) mayonnaise, ¼ cup (60 g) full-fat sour cream, ½ tsp (6 g) chili powder, ½ tsp (3 g) garlic powder, ¼ tsp (4 g) paprika, ⅛ tsp (2 g) ground cumin, 1-2 limes, ⅛ tsp (1 g) table salt, ⅛ tsp (2 g) black pepper
Add the green onions, cilantro, cotija cheese, and black beans to the pasta and corn mixture. Pour the dressing over the salad and gently toss until evenly coated.
3 green onions, ½ cup (15 g) fresh cilantro, ⅓ cup (35 g) crumbled cotija cheese, 1 cup (170g) black beans
Sprinkle additional corn, green onions, cilantro, and cotija cheese over the top, if desired. Serve immediately or refrigerate until ready to serve.