To create Quick & Easy Cheesy Taco Pasta, simply follow these straightforward steps:

1. Cook Pasta: In a large pot, bring salted water to a boil. Add the pasta and cook according to package instructions until al dente. Drain and set aside.
2. Brown Meat: In the same pot, add the ground beef or turkey. Cook over medium heat until browned and fully cooked. Drain excess fat if necessary.
3. Add Seasoning: Sprinkle the taco seasoning over the meat. Stir to combine thoroughly.
4. Incorporate Liquid: Pour in the water and salsa, stirring well to combine. Bring the mixture to a simmer.
5. Mix in Cheese: Add the shredded cheddar and Monterey Jack cheese into the meat mixture. Stir until everything is melted and well combined.
6. Combine with Pasta: Gently fold the cooked pasta into the cheesy meat mixture until everything is evenly coated.
7. Stir in Sour Cream: Remove the pot from the heat. Stir in the sour cream until it’s fully incorporated.
8. Add Tomatoes: Gently mix in the diced tomatoes, allowing them to warm through.
9. Serve Garnished (Optional): If desired, top the dish with chopped green onions, cilantro, or jalapeños before serving.

These simple steps ensure that you achieve the best results, and soon you will be enjoying Quick & Easy Cheesy Taco Pasta at its finest!