Over medium-high heat, brown ground beef in a large skillet; drain off fat.
Add tomatoes, water, taco seasoning and green chilies. Simmer on medium, covered, for 10 minutes.
Combine cottage cheese and eggs; set aside.
Place 2 flour tortillas or 4 corn tortillas on the bottom of the pan. Spread with 1/4 of the cottage cheese mixture. Top with 1/4 of the meat mixture. Repeat to create 4 total layers.
Top with shredded cheese.
Bake for 20 minutes.