Preheat oven to 450°F (200°C). .
In a small bowl or blender, mix garlic, parsley, olive oil, salt, and pepper. Set aside until needed.
Prepare the vegetables and distribute evenly over an 18x15-inch pieces of baking paper or tin foil.
Place the salmon on top and cover it with the already prepared parsley and oil mixture.
Place the pouches (papillote) on a baking tray and bake for 10 minutes. When ready, the parchment paper should puff up and brown slightly.
Remove from the oven and serve immediately. Transfer the envelope to a plate. Carefully cut open and serve.