Ingredients

1 small onion, thinly sliced1 tablespoon olive oil2 small zucchini, julienned1 cup sliced fresh mushrooms1/4 teaspoon pepper1/8 teaspoon garlic powder2 tablespoons lemon juice2 tablespoons grated Parmesan cheese, divided4 walleye fillets (about 6 ounces each)1 tablespoon butter, melted

Preparation

In a nonstick skillet, cook onion in oil over medium heat for about 2 minutes. Stir in zucchini and mushrooms; cook and stir 2 minutes longer. Sprinkle with pepper and garlic powder; stir in lemon juice. Cook and stir 30 seconds longer. Remove from heat; stir in 1 teaspoon cheese.

Place fillets in a 13-in. x 9-in. baking dish coated with cooking spray. Top each fillet with about 1/4 cup onion mixture. Drizzle with butter and sprinkle with remaining Parmesan cheese.

Bake, uncovered, at 375° for 18-22 minutes or until fish flakes easily with a fork.