Preheat oven to 400°F. Lightly grease a pie plate.
In a medium sized pot over high heat, bring the vegetable stock to a boil.
Once boiling, turn off the heat and add the cubed salmon. Let sit for 5 minutes, stirring occasionally. Use a slotted spoon to transfer salmon to a bowl. Keep the stock.
In a large pan over medium heat, begin by melting the butter. Add the shallotand sauté for 5 minutes until soft. Stir in the flour and cook for 1 minute. Whisk in the stock used for poaching the salmon and the heavy cream. Bring to a boil and remove from heat.
Stir in the corn, peas, and beans. Gently fold in the salmon. Transfer the filling to pie dish.
Roll out the dough on a lightly floured mat until it can cover the pie.
Bake the pot pie for 30 minutes. Remove from oven and let sit before serving.
Enjoy!