PREPARATION:
- Preheat oven to 400°F. Place tortilla wedges in single layer on baking sheet. Bake 10 minutes or until crisp and lightly browned; set aside.
- Meanwhile, heat oil in large skillet. Add onion and cook over medium heat 5 minutes or until tender. Add ground chuck, cook until no longer pink, stirring to separate meat. Pour off drippings. Stir in tomato sauce, garlic salt, oregano, pepper and salt. Simmer 5 minutes.
- Arrange all but 4 tortilla wedges on bottom of 9-inch pie plate, working triangles up side to form a "crust." Spoon meat mixture over tortillas. Arrange avocado wedges over meat mixture. Spoon salsa in center of pie. Top with sour cream and garnish with reserved tortilla wedges.
