First things first, grab a large skillet or pot and brown your ground beef over medium-high heat. Break it up as it cooks.
While the beef is browning, start boiling a pot of salted water for your pasta. Once it boils, add the rigatoni (or your chosen pasta shape) and cook it according to the package directions. You want it al dente, maybe even slightly undercooked, as it will finish cooking in the sauce.
Back to the beef! Once it's fully browned, drain off any excess grease. This keeps the final dish from being oily.
Now, season your beef! Add salt and pepper, and any of those optional spices like garlic powder or onion powder you like. Stir it all in.
Reduce the heat under the beef to low.
Add the cubed Velveeta cheese, the can of cream of chicken soup, and the undrained can of Rotel tomatoes with chilies to the pot with the beef.
Stir everything gently over the low heat. Keep stirring occasionally until the Velveeta is completely melted and you have a smooth, creamy, cheesy sauce. This usually only takes a few minutes. Be patient and keep the heat low to prevent scorching.
By now, your pasta should be ready or almost ready. Drain the cooked pasta well.
Add the drained pasta directly into the pot with the cheesy beef sauce.
Stir everything together until the pasta is completely coated in that gorgeous, cheesy, meaty sauce.
Taste and adjust seasoning if needed. You might want a little more salt or pepper.
Serve immediately and watch it disappear!