1Preheat oven to 350 degrees. Place ground beef and chopped onion in a large pot or pan and cook thoroughly. Drain, return to pot or pan, and set aside.
2While cooking beef, tear crescent rolls at perforations and lightly push into a 13 X 9" baking pan. Be sure to include sides of pan about 2 inches. You will have some leftover crescent rolls (I bake them separately).
3While in the bag, use hands to crush Dorito chips. Place 1/2 bag of crushed Dorito chips over crescent rolls.
4Stir in taco seasoning mixes and 1/2-3/4 jar of salsa (depending on the amount of beef)to cooked ground beef.
Spoon out all of ground beef mixture and spread over crushed Doritos.
5Spoon out one container of sour cream and spread over beef mixture.
6Place the remaining 1/2 bag of crushed Doritos over the sour cream.
7Bake in oven at 350 degrees for approximately 25-30 minutes. Expect Doritos to darken slightly but do not burn them.
8Let Taco Pie cool for about 10 minutes. Using a knife, cut pie into serving size squares. Place each square on a dinner sized plate.
9Add your toppings: Lettuce, tomatoes, more salsa and sour cream if desired, black olives (optional) and top with cheese.