Gather the ingredients for the graham cracker dough and cut the butter into small pieces. You can also use a pastry cutter instead to incorporate the butter later on and skip cutting the butter if you wish
Combine the flour, brown sugar, cinnamon, baking soda, and salt in a large mixing bowl with a whisk or in a standing mixer bowl
Take either the small butter pieces or use the pastry cutter to press the butter into the dry ingredients in the large mixing bowl or standing mixer bowl until the flour becomes crumbly in texture
Combine the milk, honey or maple syrup, and vanilla extract in a separate large measuring cup with the whisk
Add the wet ingredients to the butter and flour mixture and turn the stand mixer or regular mixer onto stir or a low setting. A soft dough should start to form
Shape the dough into a ball with your hands and scoop this out onto cling wrap and cover.
Refrigerate for at least an hour
When the hour is up, preheat the oven to 350℉/177℃
In a greased 9-inch circular pan (do not use parchment paper), press the dough into the bottom with your fingers, spreading from the center outward until the base of the pan is completely covered.
Bake graham cracker crust for 11 minutes
Poke the crust with a toothpick to see if it comes out relatively clean. While it may seem soft, allow the crust to cool and it will further solidify.
Once cool, cover the crust with a layer of Hershey's plain milk chocolate bars or chocolate of choice
Cover the chocolate layer completely with marshmallows
Switch the oven to broil and bake on the top rack for another 3-5 minutes or until marshmallows begin to swell and char slightly on top. Allow the s'mores pie to cool slightly before serving!