01 -
Set the oven to 400°F (204°C) to prepare for baking.
02 -
Boil spaghetti noodles according to package directions until al dente, then drain thoroughly.
03 -
Place ground beef in a large sauté pan over medium-high heat, crumble as it cooks until no longer pink, then drain excess grease.
04 -
Add water and taco seasoning to the cooked beef, stirring to coat evenly.
05 -
Reduce heat to low and stir in the tomato sauce, combining thoroughly.
06 -
Mix the cooked spaghetti noodles into the beef mixture until evenly distributed.
07 -
Stir in drained diced tomatoes and green chilies to infuse flavor throughout.
08 -
Remove pan from heat, then fold in 1 1/2 cups shredded Mexican cheese blend until melted and incorporated.
09 -
Arrange taco shells upright in a 9 x 13 inch baking dish for filling.
10 -
Spoon the spaghetti and beef mixture evenly into each taco shell.
11 -
Sprinkle the remaining 1/4 cup shredded Mexican cheese blend over the filled shells.
12 -
Place the baking dish in the preheated oven and bake for 4 to 6 minutes until cheese is fully melted on top.
13 -
Remove from oven and serve immediately while hot.