In a large pot or Dutch oven over medium heat, add the lean ground beef. Cook until browned, breaking it apart with a spatula as it cooks. This should take about 5-7 minutes. Drain any excess fat if necessary.
Add the finely diced yellow onion and minced garlic to the pot. Sauté for an additional 2-3 minutes, until the onion is translucent and fragrant.
Stir in the taco seasoning, mixing well to coat the beef and onions evenly. Pour in 1 cup of water, stirring to combine. Allow the mixture to simmer for about 5 minutes to let the flavors meld.
Add the mild salsa and frozen corn to the pot, stirring to mix thoroughly. This will enhance the flavor and texture of the dish.
Add the elbow pasta and an additional 1 cup of water to the pot. Bring the mixture to a boil, then reduce the heat to low. Cover and let it simmer for about 10-12 minutes, or until the pasta is al dente and has absorbed most of the liquid.
Once the pasta is cooked, stir in the mild taco sauce and 1-1/2 cups of shredded cheese. Mix well until the cheese is melted and everything is evenly combined.
Spoon the Taco Pasta into bowls and top with your favorite toppings—diced tomatoes, avocado slices, chopped cilantro, sour cream, or more cheese! The options are endless!