01 -
Heat a large skillet over medium-high heat and add the ground beef. Cook, breaking it up, until browned and fully cooked. Drain excess fat if necessary.
02 -
Return skillet to heat, stir in taco seasoning and water. Simmer for 5 minutes until seasoning is incorporated and mixture thickens slightly.
03 -
Bring a large pot of salted water to a boil. Add elbow macaroni and cook until al dente according to package instructions. Drain and set aside.
04 -
In the same pot, heat olive oil over medium heat. Add diced tomatoes with juices and cook for 2-3 minutes, stirring occasionally.
05 -
Add cooked macaroni and beef mixture to the pot with tomatoes. Stir thoroughly to combine all components evenly.
06 -
Stir in milk, then add shredded cheddar and mozzarella cheeses, mixing until melted and creamy. Blend in sour cream for a smooth texture.
07 -
Remove from heat and top with chopped green onions. Serve hot.