Preheat & Prep:

• Preheat oven to 350°F (175°C).
• Grease a 9-inch round cake pan or line it with parchment paper.

Make the Cookie Dough:

1. In a bowl, whisk together flour, baking soda, cocoa powder, and salt.
2. In another bowl, cream together softened butter and sugar until light and fluffy.
3. Add egg, vanilla extract, white vinegar, and red food coloring to the butter mixture; mix until well combined.
4. Gradually mix in dry ingredients until just incorporated. Fold in white chocolate chips.

Bake the Cookie Cake:

1. Press the dough evenly into the prepared pan.
2. Bake for 18-22 minutes, or until the edges are set, and a toothpick inserted in the center comes out clean.
3. Let the cake cool completely in the pan.

Make the Frosting:

1. Beat softened cream cheese and butter together until smooth and creamy.
2. Gradually add powdered sugar and vanilla extract, beating until fluffy and spreadable.

Decorate:

1. Spread the frosting over the cooled cookie cake.
2. Add sprinkles or other decorations to celebrate the occasion.