Preheat the oven to 425 and prep a 9 by 13 inch glass baking pan by spraying it with cooking spray.

Set a skillet over medium heat on the stove top and spray it with cooking spray. Add the sausage, and cook until it is glistening, about two minutes (if you start with a fully cooked sausage, you don't have to worry about doneness, just getting it crisp). Add the thyme and cook for another minute. Add the tomatoes and 1/4 cup of the wine. Cook, stirring occasionally until about half of the wine has evaporated, between two and four minutes.

Stir in the beans, season lightly with salt, and remove from the heat.

Place the fish in your prepared baking dish, and sprinkle with a little salt and pepper. Top it with your tomato, sausage, bean mixture, making sure that the fish is covered evenly.

Pour the remaining 1/4 cup of wine into the dish and cover with foil. Bake for 15 to 20 minutes, until the fish is no longer translucent, but before it starts to flake apart.