Combine first 6 ingredients and mix well. In another dish combine bread
crumbs and nuts. Dip fish pieces in sour cream mixture, then coat evenly
with the bread crumb and nut mixture. Place fish in a circular fashion in a
round baking dish with the thickest part to the outside. Cover and
microwave on high for 2-3 minutes. Check to see if fish is cooking evenly;
make adjustments as necessary. Microwave for an additional one minute
or until the fish flakes easily. Remove from oven and serve immediately.