Cookies and Cream Cake

Name: Cookies and Cream Cake
Prep time: 2 h
Cook time: 20 min
Total time: 2 h 20 min
Cuisine: American
Ingredients: 2 cups (240 g) all-purpose flour; 1 3/4 cups (350 g) granulated sugar; 3/4 cup (88.5 g) good quality dark cocoa powder; 2 teaspoons (8g) baking soda; 3/4 teaspoon (3 g) baking powder; 1 teaspoon (6 g) salt; 1 cup (240 g) buttermilk, room temperature; 1/2 cup (109 g) vegetable oil; 3 large eggs, (room temperature); 1 cup (236.6 g) hot water; 1 teaspoon (4.2 g) vanilla extract; 3/4 cup (173.25 g) heavy whipping cream; 6 ounces cream cheese, (softened); 2 cups (250 g) powdered sugar, measured and then sifted; 8 Oreo cookies, (broken into chunks); 6 Oreo cookies, (pulverized into fine crumbs); 2 cups (452 g) unsalted butter, slightly cold; 6 cups (750 g) powdered sugar, measured and then sifted; 3 tablespoons (43.3 g) heavy whipping cream; *This buttercream recipe makes enough to fill and cover your cake. If you want to add additional piping; 1 cup (150 g) semi sweet or dark chocolate chips; 3/4 cup to 1 cup ((173-231 g) heavy whipping cream); black food gel (optional)