Creating Mexican Pasta Salad is simple and quick when you follow these steps:

1. Cook the Pasta: Bring a large pot of salted water to a boil. Add the pasta and cook according to package instructions until al dente. Drain and rinse under cold water to cool.
2. Prepare the Vegetables: While the pasta is cooking, chop the bell pepper, onion, cilantro, and avocado. Halve the cherry tomatoes and prepare the corn if needed.
3. Combine Ingredients: In a large bowl, combine the cooked pasta, black beans, tomatoes, corn, bell pepper, onion, and cilantro.
4. Make the Dressing: In a small bowl, whisk together the lime juice, olive oil, cumin, chili powder, salt, and pepper until well combined.
5. Mix Everything Together: Pour the dressing over the pasta and vegetable mixture. Toss gently until everything is well coated.
6. Adjust Seasoning: Taste and adjust the seasoning if necessary. You may want to add more lime juice or spices based on your preference.
7. Chill: If time allows, let the salad chill in the refrigerator for about 30 minutes before serving. This helps the flavors meld together.
8. Serve: Just before serving, add the diced avocado for extra creaminess (if using).