Follow these easy steps to create your delicious Oreo Bat Cookies:

1. Preheat the Oven: Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.
2. Mix Dry Ingredients: In a medium bowl, whisk together the flour, cocoa powder, baking soda, and salt until well combined. Set aside.
3. Cream Butter and Sugars: In a large bowl, cream together the softened butter, granulated sugar, and brown sugar until light and fluffy.
4. Add Egg and Vanilla: Beat in the egg and vanilla extract, mixing until well incorporated.
5. Combine Wet and Dry Ingredients: Gradually add the dry mixture to the wet mixture, stirring just until combined.
6. Fold in Oreos and Chocolate Chips: Gently fold in the crushed Oreo cookies and chocolate chips until evenly distributed.
7. Shape the Cookies: Using a tablespoon or cookie scoop, portion out dough onto the prepared baking sheet, leaving space between each cookie.
8. Bake: Place the baking sheet in the preheated oven, and bake for 12-15 minutes, or until the edges are set. The centers may appear slightly underbaked, but they will firm up as they cool.
9. Cool: Once baked, remove the baking sheet from the oven and allow the cookies to cool on the sheet for 10 minutes before transferring them to a wire rack to cool completely.
10. Decorate: Melt the orange and black candy melts separately in the microwave according to package instructions. Use a piping bag or a small spatula to drizzle the melted candy over the cooled cookies to create bat wings. Allow the candy to set before adding edible eyes.

These clear step-by-step instructions ensure that anyone can successfully whip up a batch of Oreo Bat Cookies without any hassle.