Brown and drain hamburger meat. Stir in taco seasoning, Rotel, beef broth, and macaroni. Heat to boiling. Reduce heat and cover pan. Simmer 12-14 mins until macaroni is tender.

Melt the butter in a saucepan.

Whisk in the flour and cook, whisking for 5 minutes until fragrant and light brown in color. Add the milk and bring to a boil. Whisk until smooth and thickened.

Remove from heat and stir in the shredded cheddar cheese until melted. Add the salt and pepper to the cheese sauce.

Pour the cheese sauce over the hamburger mixture. Stir gently to combine.