2 (3 ounce) packages white chocolate flavored Jell-O mix
3/4 cup boiling water
1 egg
1 (16 ounce) package pumpkin
1/2 cup milk
1 teaspoon vanilla extract
1/2 cup maple syrup
1 2/3 cups water
1 teaspoon pumpkin pie spice
1/2 teaspoon granny smith apple pie spice
In a large glass bowl, combine boiling water, egg, pumpkin and milk. Stir until dissolved. Pour into a serving dish. Refrigerate in refrigerator. Cover loosely with foil or plastic wrap and refrigerate overnight.
Preheat oven to 350 degrees F (175 degrees C). Spray cookie sheet with nonstick spray. Remove parchment paper from the oven and brush evenly with the boiling water to keep cookies from sticking. Bake in preheated oven for 45 minutes. Remove foil that comes out of the oven whilst still warm and place on foil. Remove and set aside. Brush top and bottom edges of cookies with egg yolk and sprinkle over top with pie spice.
Carefully drop cookies into freezer canister of electric cookie maker. Bake for 15 minutes in oven without opening. Remove from oven and allow to cool on waxed paper.