In a skillet, brown ground beef. Drain Add corn, tomato sauce, picante sauce, chili powder and cumin; bring to a boil. Reduce heat; cover and simmer for 5 minutes.
Place half of the tortillas in the bottom and up the sides of a greased 13x9-in. baking pan. Spoon meat mixture over tortillas. Combine cottage cheese, eggs, Parmesan, oregano and garlic salt; spread over meat mixture. Top with remaining tortillas. Cover with foil.
Bake at 375° for 30 minutes. Sprinkle with cheese; return to the oven for 10 minutes or until cheese is melted.