Begin by chopping the Velveeta cheese into small cubes to ensure even melting. Also, finely chop the white onion and have the diced green chilies ready.

In a medium-sized saucepan, add the cubed Velveeta cheese and milk. Cook over low heat, stirring continuously until the cheese is completely melted and the mixture is smooth and creamy.

Stir in the finely chopped white onion, diced green chilies, cumin, garlic powder, paprika, and ground cayenne pepper. Continue to cook and stir until all the ingredients are well combined and the queso is heated through.

If your queso is too thick, you can add a little more milk to achieve your desired consistency. Conversely, if it's too thin, continue cooking for a few more minutes to thicken it up.

Once your Carlos O'Kelly's-inspired queso is smooth, creamy, and full of flavor, it's ready to be served. Transfer it to a serving bowl and serve immediately with your favorite tortilla chips or as a dipping sauce for various dishes.