In a large skillet, brown ground beef. Drain off fat. Stir in taco seasoning and salsa or tomato sauce, simmer 5 minutes.
Press crescent rolls on the bottom of a 9x13 pan lightly sprayed with cooking spray. Press seams to seal. Top crescent rolls with meat mixtures. Spread sour cream over meat. Top with cheese and crushed Dortios.
Bake for 30 minutes.
Can substitute 1 (8-oz) can tomato sauce for salsa.