Orange Roughy with Basil and Peppers

1 lb orange roughy fillet (or another mild fish like Tilapia) 4 tablespoons butter or 4 tablespoons margarine , softened 1 teaspoon dried basil or 1[...]

2 red bell peppers or 2 green bell peppers , seeded and julienne sliced 1 small onion , thinly sliced 1 tablespoon fresh basil , chopped 1 teaspoon dried[...]