Cook the Meat: In a large skillet, brown the lean ground beef and minced onion over medium heat until the beef is fully cooked. Drain any excess fat thoroughly, then season with salt and pepper. Set this mixture aside to cool.
Prepare the Pasta: Cook your chosen pasta according to the package directions until al dente. Drain well, then toss the cooked pasta with 1 tablespoon of olive oil to prevent sticking. Allow it to cool down completely.
Whisk the Dressing: In a large serving bowl, combine the ½ cup of olive oil, fresh lime juice, and taco seasoning. Whisk these ingredients together until they are well blended and create a vibrant, zesty dressing.
Assemble the Salad: Add the cooled pasta, cooled ground beef, thawed corn, rinsed black beans, cheddar cheese, halved cherry tomatoes, diced red and green bell peppers, diced jalapeƱo, and sliced green onions to the bowl with the dressing.
Toss and Chill: Gently toss all the ingredients until everything is thoroughly combined and coated in the flavorful dressing. Cover the bowl and refrigerate for at least 30 minutes to allow the flavors to meld beautifully.
Serve & Enjoy: Before serving, give the salad another quick toss. Garnish with fresh cilantro or parsley if you like. Taste and adjust seasonings with extra salt, pepper, or lime juice as needed.