Melt the chocolate

• Place the chocolate in a microwave-safe bowl.
• Melt in the microwave in short bursts, stirring between each, until smooth.

Spread on the sheet pan

• Pour the melted chocolate onto a sheet pan.
• Spread it into an even layer with an offset spatula.

Add the toppings

• Immediately scatter the crushed Oreos, Halloween sprinkles, candy eyes and Reese's pieces over the chocolate.
• Press the toppings lightly so they stick.

Chill and break up

• Let the bark set in the fridge.
• Crack it into pieces and serve.