Preheat an oven to 400F.

Cook the pasta as directed unless you're using something like Ready Pasta. 

In a large skillet, brown the ground beef over medium high heat. Cook until no pink remains. 

Reduce the heat to low before adding the taco and ranch seasoning, RO-TEL, and pinto beans to the beef. (If you'd like a thicker pasta, drain the beans.) Stir well. 

Once the pasta is cooked, drain the water and add the pasta to the taco mixture. 

Mix everything together before adding the mixture to an 8x8 baking dish or comparable dish. Top with shredded cheese and bake for 15-20 minutes. (Keep an eye on the cheese to avoid burning.)