Preheat oven to 200 degrees C. Lightly grease a 20x30cm baking dish.
Rinse fish fillets under cold water, and pat dry with kitchen paper. Lay fillets side by side in the prepared baking dish. Pour the salsa over the top, and sprinkle evenly with the grated cheese. Top with the crushed corn chips.
Bake, uncovered, in the preheated oven for 15 minutes or until fish is opaque and flakes with a fork. Serve topped with sliced avocado and sour cream.
I absolutely love this dish, it's so easy to make it, only takes a few minutes to prepare and is absolutely delish! Have also made a few times with chicken breast rather than fish, also extremely delish!! - 04 Nov 2011