Flounder Spinach Bake with fish

1 lb flounder fillets 10 ounces frozen chopped spinach , thawed and well drained 1 1/2 cups seasoned croutons , coarsley chrushed 8 ounces whole kernel corn ,[...]

1 (10 ounce) package frozen chopped spinach , cooked according to package directions,drained well and squeezed dry 1 lb fresh small flounder fillets salt and[...]

1 (3 1/2 ounce) bag boil-in-bag long-grain rice 1/2 teaspoon salt , divided 1/4 teaspoon black pepper , divided 4 (6 ounce) flounder fillets 2 tablespoons[...]