Line an 8 x 8 baking pan with parchment paper.
Cover the bottom of the pan with the graham crackers.
Slowly melt the chocolate chips with 1 tablespoon Crisco at 10 second intervals until creamy and smooth.
Spread the melted chocolate on top of the graham crackers to the edges and corners of the pan.
Melt the Wilton orange Candy Melts and 1 tablespoon shortening at 10 second intervals until creamy and smooth.
Pour over the chocolate layer and spread to the corners and edges with a spatula.
Sprinkle the marshmallows over the melted candy melts.
Sprinkle the crushed Oreos over the top of the marshmallows.he top.
Drop the Reese's Pieces over the top.
Randomly drop the candy corn over the top.
Sprinkle the Halloween colored sprinkles over the top.
Cut a piece of parchment paper to fit the top of the pan.
Lay it over the top and gently apply pressure over all the toppings to embed them in the melted chocolate.
Allow the chocolate to harden overnight.
Cut into pieces the next day.