In 12 inch skillet cook beef over medium heat 5-7 minutes, stirring occasionally until thoroughly cooked; drain. Stir in refried beans, salsa and taco seasoning mix. Reduce heat to medium, bring to boil, stirring occasionally.
In ungreased 2-quart casserole, place 2 cups of the broken tortilla chips.
Top with the meat mixture. Sprinkle with the peppers, onions, one cup of the tomatoes, the cheese and olives.
Bake uncovered 25 minutes or until hot and bubbly and cheese is melted.
Top each serving with remaining ingredients as desired.