1 1/2 c. sliced mushrooms
3/4 c. chopped onion
1/8 tsp. pepper
1/4 c. grated Parmesan cheese
1 (8 oz.) plain non-fat yogurt
4 orange roughy fillets
2 tbsp. fine, dry bread crumbs
Paprika

Spray large skillet with Pam. Place over medium heat until hot. Add first 3 ingredients and saute 3 minutes. Set aside and let cool. Combine mushroom mixture with cheese and yogurt (at room temperature). Stir well. Place fillets in baking dish. Top with mushroom mixture and sprinkle with bread crumbs. Bake, uncovered, at 350 degrees for 30 minutes. Garnish with paprika and parsley sprigs, if desired. Serves 4. 242 calories per serving.