01 -
Cook spaghetti noodles in salted boiling water according to package directions until al dente. Drain and set aside to prevent overcooking.
02 -
Heat a large sauté pan over medium-high heat and add ground beef. Break up meat while cooking until no pink remains and drain excess grease thoroughly.
03 -
Add water and taco seasoning to the beef, stirring until evenly coated. Simmer for 1 minute to develop flavors.
04 -
Reduce heat and stir in tomato sauce until well blended with beef. Gently fold in cooked spaghetti, tossing to coat all noodles.
05 -
Mix in drained diced tomatoes and green chilies. Remove from heat and fold in 1 1/2 cups shredded cheese until melted and creamy.
06 -
Arrange taco shells upright in a 9x13 inch baking dish. Fill each shell with spaghetti mixture, avoiding overfilling. Top with remaining cheese.
07 -
Bake at 400°F for 5 minutes until cheese melts and bubbles. Serve immediately while shells are crisp and cheese is hot.