Fish Baked in Parchment Paper Ingredients - 1 kg fish (I used snapper, you can use whatever you find) - 1 onion - 2 lemons - 1 bunch thyme - 3 bay leaves - 100 ml olive oil - Salt and pepper - 50 g flour - A little water - Parchment paper Method 1. Lay out parchment paper on the counter. Spread the thyme along the length of the fish, then the bay leaves, then the onion slices, and then the lemon slices. Drizzle with some olive oil, salt, and pepper. Place the fish on top, drizzle it with olive o