Seann, try this recipe:
1 medium onion, chopped
1 clove garlic, crushed in 1/2 tsp salt
500gm tomatoes, blanched, peeled, chopped
1 tbsp tomato puree (paste)
8 black olives, stoned and sliced
1 green chilli, seeded and chopped
1/2 green pepper (capsicum), seeded and chopped
1 tsp ground cumin
300gm tuna, cut into chunks
185gm cottage cheese
185gm Cheddar cheese, grated
4 Corn or Wheat Tortillas, cut into strips
Preheat the oven to 180 degrees C (350 degrees F)
Heat the oil in a medium saucepan, add the garlic and onion and fry gently until soft but not brown. Add tomatoes, tomato puree, olives, chilli, green pepper and cumin. Bring to the boil, cover then simmer for 15 mins until fairly thick; remove the lid if necessary. Add the tuna and simmer for 10 minutes.
Mix the cottage cheese with the egg. Place half the tomato mixture in a shallow ovenproof dish. Cover with half the grated cheese. Spread the cottage cheese mixture over the top, then cover iwth the tortilla strips. Spoon over the remaining tomato mixture. Sprinkle with the remaining grated cheese. Bake for 30 minutes until bubbling and golden brown.