Baked pollock with parmesan and yoghurt

It's based on a recipe from http://www.cooks.com/rec/view/0,1827,147185-233207,00.html.

I replaced sour cream with yoghurt and butter with olive oil.

1 1/2 lbs. pollock
3/4 c. sour cream
1/2 c. Parmesan cheese
1/4 c. melted butter
1/2 tsp. salt
1/8 tsp. pepper

Place 1 1/2 pollock fillets in greased baking dish. Spread on fillets the mixture of sour cream, Parmesan cheese, melted butter, salt and pepper. Bake uncovered 30 minutes at 350 degrees.