01 -
Heat a large deep skillet or Dutch oven over medium heat. Add ground beef and cook, breaking it up with a spatula, until browned and cooked through, about 5 minutes. Drain excess grease.
02 -
Add the taco seasoning to the beef and mix thoroughly to evenly coat the meat.
03 -
Add the undrained diced tomatoes with green chilies, tomato sauce, and water. Stir well to combine the mixture.
04 -
Bring the mixture to a gentle boil. Stir in the broken spaghetti until fully submerged.
05 -
Reduce heat to medium-low. Cover and simmer, stirring occasionally, until the spaghetti is tender and most of the liquid is absorbed, 12 to 15 minutes.
06 -
Remove from heat. Stir in shredded cheddar cheese until melted and sauce is creamy.
07 -
Taste and adjust salt and pepper as needed.
08 -
Serve hot, topped with cilantro, sour cream, sliced jalapeños, or diced avocado as desired.