1 lb. sole or flounder fillets
2 tsp. butter
1/2 c. carrots, shredded
1/2 lb. fresh mushrooms, diced
1 tbsp. lemon peel, grated
1 tsp. onion powder
1/2 tsp. salt
1/4 tsp. black pepper
1/4 tsp. marjoram
Lemon wedges, optional

Brush 1 side of each fillet with butter. Combine remaining ingredients; mix well. Spoon mixture onto the center of the buttered side of each fillet. Roll up fillet; place seam-side down in a lightly greased baking pan. Bake, uncovered, until fish flakes easily when tested with a fork, about 25 minutes. Garnish with lemon wedges.