Preheat your oven to 350°F (175°C).
Grease your 9x13 inch baking pan with Non-Stick Cooking Spray, or line it with parchment paper.
In a mixing bowl, combine the graham cracker crumbs and melted butter. Stir until the crumbs are well coated.
Pour the crumb mixture into the prepared baking pan and press it firmly into an even layer.
In a separate bowl, combine the Reese's Chocolate and Peanut Butter Spread with the sweetened condensed milk. Stir until smooth, then pour it over the crust.
Sprinkle the chocolate chips, Reese's Pieces, and flaked coconut over the top and gently press everything down.
Bake for 25-30 minutes, or until the edges are golden and the center is set.
Allow to cool completely in the pan, then cut into squares and serve.