Creating the Oreo Cookie Cake is simpler than you might think. Just follow these easy steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C). Grease and flour two 9-inch round cake pans.
2. Mix Dry Ingredients: In a large bowl, sift together the flour, granulated sugar, cocoa powder, baking powder, baking soda, and salt.
3. Add Wet Ingredients: Add in the milk, vegetable oil, eggs, and vanilla extract. Mix until combined and smooth.
4. Incorporate Boiling Water: Carefully stir in the boiling water. The batter will be thin, which is okay!
5. Fold in Oreos: Gently fold in the crushed Oreo cookies to add a delightful crunch.
6. Divide Batter: Pour the batter evenly into the prepared cake pans.
7. Bake: Bake in the preheated oven for 30-35 minutes, or until a toothpick inserted into the center comes out clean.
8. Cool: Allow the cakes to cool in their pans for 15-20 minutes before transferring them to wire racks to cool completely.
9. Prepare Frosting: While the cakes cool, beat the softened butter in a bowl until creamy. Gradually add the powdered sugar, vanilla extract, and heavy cream while mixing until light and fluffy. Fold in the crushed Oreo cookies.
10. Assemble the Cake: Once the cakes are completely cool, place one layer on a serving plate. Spread a generous layer of frosting on top. Place the second layer on top of the frosting.
11. Frost the Sides: Use the remaining frosting to cover the sides and top of the cake. Top with extra crushed Oreo cookies for decoration.

With these simple steps, you will have created a stunning and tasty Oreo Cookie Cake to share with friends and family.