Esperanza's Beef Enchiladas

Directions

1. 1
   Preheat oven to 350 degrees.
2. 2
   Heat oil in medium skillet over medium-high heat.
3. 3
   Add enough tortilla pieces to fill, but not crowd the skillet; fry until crisp.
4. 4
   Remove with slotted spoon; set aside to drain on paper towels.
5. 5
   Repeat with remaining tortilla pieces.
6. 6
   Cook and stir ground beef and onion in a large skillet over medium-high heat, stirring to break up meat until beef is browned; drain fat.
7. 7
   Add taco or enchilada sauce, tomato sauce, water and taco or enchilada seasoning mix.
8. 8
   Bring to a boil over high heat.
9. 9
   Reduce heat to low and simmer 20 minutes.
10. 10
    Combine beef mixture with 2/3 of fried tortilla pieces in a large bowl; transfer to 13x9-in baking dish.
11. 11
    Top with remaining 1/3 of tortilla pieces, cheeses, olives and green onions.
12. 12
    Bake until cheeses are melted, about 10 minutes.
13. 13
    Serve, and garnish with sour cream and guacamole, if desired.