Apple Streusel Pie

Apple Streusel Pie Pastry for 2 crusts 6 Granny Smith apples, unpeeled, sliced thin 2 tbsp lemon juice 1/2 cup white sugar 2 rounded tsp flour 1/2 tsp cinnamon 1/4 tsp salt Streusel: 1/2 cup packed brown sugar 1/2 cup flour 2 tbsp butter, room temp pinch of salt Heat oven to 400F. Line a 9 inch pie plate, with 1/2 of the pasty. In a bowl toss apple slices with lemon juice. Add white sugar, flour, cinnamon and salt. Spoon into the pie shell. Combine the streusel ingredients in a small bowl, until crumbly. Spoon mixture over top of the apple layer. Cover with remaining pastry. Seal and flute edges. Mix together 1 egg white and 2 tbsp water. Brush over top of the crust layer. Bake in oven for 10 minutes at 400F. Reduce to 375F and cook for another 40 minutes.