Do not be intimidated by cooking en papillote - this method is healthy, simple, and quick. If you don't have parchment paper, aluminum foil may be substituted, but won't look as pretty.
Cut 4 pieces of parchment into squares or rectangles twice as big as the pieces of fish. Fold in half and cut out a half heart shape (like you did on Valentine's day as a kid so when it unfolds it's shaped like a heart). Lay the parchment on a baking sheet.
Unfold one parchment heart and spoon ¼ of the zucchini mixture into the center.
Place a piece of halibut on top and season with salt and pepper.
Top with 2 lemon slices.
Fold over the edges of the parchment little by little, leaving a small opening. Pour in 1 tablespoon of the wine and fold over to seal.
Repeat with remaining parchment and fish.
Put in the oven and bake for 8 to 10 minutes.
Transfer the packets to plates and serve immediately.
Notes
Gluten Free, Parve
Recipe by Katherine Martinelli at http://www.katherinemartinelli.com/blog/2012/halibut-with-zucchini-en-papillote-recipe/