Preheat oven to 450 degrees.
In a small mixing bowl, whisk the honey, mustard and lemon juice.
In a medium mixing bowl, coat the fish with the honey mixture.
In a large mixing bowl, add the remaining 9 ingredients (onion through butter) and mix together thoroughly.
In a large casserole dish, add fish and top with the vegetable mix. Bake for 15 to 17 minutes, until fish flakes easily with a fork. Serve warm.