cookie sheet apple pie

Ingredients For cookie sheet apple pie

• 6 c

  all-purpose flour
• 1 1/2 tsp

  salt
• 1 1/2 tsp

  baking powder
• 1 1/2 c

  shortening
• 6

  egg yolks
• 3/4 c

  plus 4-1/2 teaspoons water
• 3 Tbsp

  lemon juice
• 8 c

  sliced peeled tart apples
• 1 1/2 c

  sugar
• 1 c

  crushed cornflakes
• 1 tsp

  ground cinnamon
• 1/2 tsp

  ground nutmeg
• 1

  egg white, lightly beaten