For the pastry (adapted from Ina Garten’s Chicken Pot Pie recipe)
1-1/2 cups all-purpose flour
3/4 teaspoons kosher salt
1/2 teaspoon baking powder
1/4 cup vegetable shortening
1/4 cup cold unsalted butter, diced
1/4-1/3 cup ice water
1 egg beaten with 1 tablespoon water, for egg wash
Flaked sea salt and cracked black pepper
Mix dry ingredients together. Cut in shortening and butter. Add in enough cold water to make the dough begin to stick together. Knead dough (in the bowl) until you can form the pastry into a ball. Divide dough in half. Wrap and refrigerate for 30 minutes.
For the filling:
1/3 cup butter
1/3 cup chopped onion
1/3 cup all-purpose flour
1/2 teaspoon salt
1- 3/4 cups reserved chicken broth
1/2 cup milk, half & half, or cream
2 1/2 cups chopped cooked chicken
2 cups pre-cooked mixed vegetables (I used the carrots and celery from the crock pot and added some home-canned green beans)
1. Heat oven to 425°F.
2. Roll out bottom pie crust to fit a 9 inch pie plate. Place dough in pie plate. Cut off excess around the edges and crimp or pinch. Pre-bake shell for 8-10 minutes.
3. Meanwhile, In 2-quart saucepan, melt butter over medium heat. Add onion; cook 2 minutes, stirring frequently, until tender. Stir in flour, salt and pepper until well blended. Gradually stir in broth and milk, cooking and stirring until bubbly and thickened.
4.Stir in chicken and mixed vegetables. Remove from heat. Spoon chicken mixture into crust-lined pan.
5. Roll out second crust. Top pie, then seal edge. Brush with beaten egg. Cut slits in several places in top crust. Bake 30 to 40 minutes or until crust is golden brown. During last 15 to 20 minutes of baking, cover crust edge with strips of foil to prevent excessive browning if needed. Let stand 5 minutes before serving.