Step 1: Prepare for Baking
Begin by preheating your oven to 350°F (175°C). Line a standard 12-cup muffin tin with paper cupcake liners. If you are making 24 cupcakes, prepare two tins. This initial step ensures that your baking environment is ready and your cupcakes won’t stick, making for a smooth process from start to finish.

Step 2: Mix the Dry Ingredients
In a large mixing bowl, whisk together the all-purpose flour, granulated sugar, unsweetened cocoa powder, baking soda, baking powder, and salt. Whisking thoroughly for at least 30 seconds helps to evenly distribute the leavening agents and aerate the flour, which is the first step towards a light and fluffy cupcake.

Step 3: Combine the Wet Ingredients
In a separate medium-sized bowl, lightly beat the two large eggs. To the eggs, add the buttermilk, vegetable oil, and vanilla extract. Whisk these wet ingredients together until they are just combined. Don’t overmix at this stage; you just want to break up the eggs and incorporate everything.

Step 4: Create the Cupcake Batter
Pour the wet ingredient mixture into the large bowl containing the dry ingredients. Using a spatula or a mixer on low speed, mix until the ingredients are about halfway combined. It will look thick and a bit lumpy at this point. Scrape down the sides of the bowl to ensure everything is being incorporated.

Step 5: Bloom the Chocolate
Carefully and slowly pour the cup of hot coffee (or hot water) into the batter while mixing on low speed. The batter will become very thin and liquidy – this is completely normal! This hot liquid is “blooming” the cocoa powder, which unlocks its deepest flavor potential. Continue to mix only until the batter is smooth and homogenous. Be careful not to overmix, as this can lead to tough cupcakes.

Step 6: Fill and Bake
Evenly distribute the batter among the prepared cupcake liners, filling each one about two-thirds full. This leaves enough room for the cupcakes to rise without spilling over. Bake in the preheated oven for 20-25 minutes. To check for doneness, insert a toothpick into the center of a cupcake; if it comes out clean or with a few moist crumbs attached, they are ready.

Step 7: Cool the Cupcakes
Once baked, remove the cupcakes from the oven. Let them cool in the muffin tin for about 5-10 minutes before carefully transferring them to a wire rack. It is crucial to let them cool completely to room temperature before frosting. Attempting to frost warm cupcakes will result in a melted, soupy mess.

Step 8: Prepare the  Cookies & Cream Frosting
While the cupcakes are cooling, you can begin the frosting. In a large bowl, using a stand mixer with a paddle attachment or a hand mixer, beat the softened butter and softened cream cheese on medium-high speed for about 3-4 minutes until the mixture is completely smooth, light, and fluffy. Scrape down the sides of the bowl periodically.

Step 9: Sweeten the Frosting
With the mixer on low speed, gradually add the sifted powdered sugar, one cup at a time. Wait for each cup to be incorporated before adding the next. This gradual addition prevents a sugar cloud from exploding in your kitchen. Once all the sugar is added, add the teaspoon of vanilla extract.

Step 10: Finalize the Frosting
Increase the mixer speed to medium-high and beat for another 2-3 minutes until the frosting is exceptionally light and creamy. Turn the mixer off and add the finely crushed chocolate sandwich cookies. Using a spatula, gently fold the cookie crumbs into the frosting until they are evenly distributed. This creates the classic “Cookies & Scream” look and flavor.

Step 11: Assemble the Cookies & Scream Spider Cupcakes
Once the cupcakes are completely cool, you are ready for the fun part! Using an offset spatula or a piping bag fitted with a large round tip, apply a generous layer of the cookies and cream frosting onto each cupcake.

Step 12: Create the Spiders
To make the spider legs, you have two options. You can pipe them directly onto the frosted cupcake or create them on parchment paper to firm up first. Using your tube of black decorating icing or a piping bag with melted chocolate fitted with a small round tip, pipe four small lines curving outwards on the left side of the cupcake and four lines on the right side. For a sturdier option, pipe the leg shapes onto a sheet of parchment paper and place them in the refrigerator for 10-15 minutes to harden before gently placing them on the cupcake.

Step 13: Complete the Spooky Spiders
Gently press one whole chocolate sandwich cookie into the center of the frosting on top of each cupcake to create the spider’s body. Use a tiny dab of your black icing or melted chocolate to act as “glue” and attach two candy eyes to the front of the cookie body. Your frighteningly delicious Cookies & Scream Spider Cupcakes are now complete and ready to scare up some appetites!