1. Preheat the oven to 375°F (190°C).

2. Roll out the pastry dough and place it in a pie dish.

3. In a skillet cook the bacon slices over medium heat until crispy then set them aside.

4. Add the chanterelle mushrooms to the skillet and sauté until they release their moisture and start to brown.

5. In a separate bowl mix the cold butter and flour to create a crumbly texture.

6. Add the cooked bacon and mushrooms to the bowl and mix well.

7. Pour in the cold water and mix until the dough comes together.

8. Add a pinch of salt and mix well.

9. Roll out the dough to fit the pie dish and place it on top of the pastry crust.

10. Crimp the edges to seal the pie and cut a few slits in the top to allow steam to escape.

11. Bake the pie for 40-45 minutes or until the crust is golden brown.

12. Sprinkle the Västerbottensost cheese over the top of the pie and return it to the oven for an additional 5-7 minutes or until the cheese is melted and bubbly.

13. Remove the pie from the oven and let it cool for a few minutes before serving.

14. Garnish with fresh parsley and serve warm.