After an hour of searching I have found it!
My "The Traditional Pie Cook Book", I bought it at a garage sale about a year ago.
Today I tried out a recipe from it for the first time. It turned out to be great!
The filling was so creamy and perfect, the crust was so crispy and delicious.
You HAVE to try this one! It was such a success that I even took a picture of myself with it, ya its blurry.

Ingredients:
For pie filling:

4 large chicken breast halves on the bone
Salt and freshly ground pepper
4 cups chicken stock or canned low-sodium broth
4 tbsp unsalted butter
1/2 pound mixed wild mushrooms, thickly sliced
1/4 cup all-purpose flour
3/4 cup heavy cream/yogurt
2 tablespoons finely chopped flat-leaf parsley
1 teaspoon minced thyme
1/2 cup peas (optional)

For pastry:

2 cups all-purpose flour
1/2 teaspoon salt
2 sticks (1/2 pound) unsalted butter, cut into 1/2-inch pieces and chilled
1/2 cup sour cream
1 large egg, lightly beaten with 1/4 cup milk

Directons:
1. MAKE THE FILLING:
Preheat the oven to 400 F.
Put the chicken in a medium roasting pan, season generously with salt and pepper. Roast the chicken for 20 minutes, until it's partially cooked and shred the meat. Leave the oven on.

Meanwhile, in a medium saucepan, boil the stock until reduced to 2 cups, about 15 minutes; keep warm.
Melt the butter in a large, deep skillet. Add the mushrooms, season with salt and pepper and cook over high heat, stirring occasionally, until softened and golden, about 6 minutes. Sprinkle the flour over the mushrooms and cook, stirring, until evenly coated. Add the reduced stock, the cream/yogurt, peas (optional) and whisk until thickened, about 3 minutes. Add the shredded chicken, parsley and thyme and season the filling with salt and pepper; let cool.

MAKE THE PASTRY:
In a food processor, pulse the flour with the salt, add butter and pulse until the mixture resembles coarse meal. Add the sour cream and pulse just until it looks creamy.

Turn the pastry out onto a lightly floured surface and divide it into thirds; pat two of the thirds into 1 disk and the remaining third into another disk. Wrap the disks in plastic and refrigerate them until firm, at least 30 minutes.
On a lightly floured surface, roll out the larger piece of pastry to a 15-inch round.
Transfer the pastry to a deep 10-inch glass pie plate. Spoon the chicken filling into the pastry and brush the rim with the egg wash. Roll out the remaining pastry to an 11-inch round and carefully lay it on top of the filling. Press the edges of the pastry to seal and trim the overhang to 1 inch. Fold the overhanging pastry dough under itself and crimp it decoratively to seal. Cut 4 slashes in the top crust and brush with the egg wash.

Bake the pie for 20 minutes, or until the pastry is lightly golden. Lower the temperature to 350 F and bake for 40 minutes longer, or until the top and bottom crusts are golden and the filling is bubbling. Cover the pie loosely with foil if the top crust browns too quickly. Let the chicken pie stand for 15 minutes before serving.

Enjoy!