01 -
Heat olive oil in a large deep-sided skillet over medium-high heat. Add ground beef and cook, stirring occasionally, until beef is browned and fully cooked. Drain off any excess fat.
02 -
Add fire-roasted diced tomatoes with green chilies and taco seasoning mix to the skillet. Stir to coat the meat with seasonings.
03 -
Stir in tomato paste until evenly distributed through the beef and tomato mixture.
04 -
Pour in water. Break spaghetti noodles in half and add to the skillet, submerging them in the liquid.
05 -
Stir well to prevent noodles from clumping, then bring the mixture to a boil over medium-high heat.
06 -
Reduce heat to medium-low, cover, and simmer for 12–15 minutes, stirring occasionally, until spaghetti is cooked al dente and most of the liquid is absorbed.
07 -
Carefully pour off any remaining excess liquid.
08 -
Sprinkle shredded taco blend cheese evenly over the hot spaghetti mixture. Cover again and let sit for 2–3 minutes until cheese is fully melted.
09 -
Top with chopped fresh tomato and green onion as desired before serving.