Using a large cast iron skillet, add Velveeta and cream cheese cubes and place over medium-high heat. Cook, stirring often, until cheese has completely melted and mixture is smooth.

While the cheese is melting, cook the ground beef in a separate skillet until fully cooked. Drain any excess grease from the pan.

Add browned beef, cream of mushroom soup and salsa to the skillet with the melted cheese; stir until well combined.

Serve hot with tortilla chips.