01 -
Preheat your oven to 350°F (180°C) and line a 9-inch pie pan with parchment paper. Set it aside.
02 -
In a large bowl, use a hand mixer to beat the softened butter, brown sugar, and sugar together until the mixture becomes light and fluffy.
03 -
Add the canned pumpkin puree, vanilla extract, and egg into the butter-sugar mixture. Beat until well combined. Optionally, mix in orange food coloring for a festive hue.
04 -
In a separate bowl, combine the flour, baking soda, salt, and cinnamon. Stir evenly, then gradually add this dry mixture to the wet ingredients, about ½ cup at a time, mixing until a soft dough forms.
05 -
Gently fold in the chocolate chips, mini marshmallows, and graham cracker bits with a silicone spoon, ensuring even distribution.
06 -
Spread the dough evenly into the prepared pie pan. Optionally, top with extra chocolate chips, marshmallows, and graham cracker pieces.
07 -
Bake in the preheated oven for 20-25 minutes, or until the edges are golden brown and the marshmallows on top are toasted.
08 -
Let the cookie cake cool in the pan for about 20 minutes. Lift it out using the parchment paper, slice, and enjoy.