Preheat the oven to 350°F. Line the bottom of three 6-inch round cake pans with parchment paper. Grease and flour the sides.
Stir together the flour, baking powder, and salt together in a medium bowl, then set aside.
Add the butter and Domino® Golden Sugar to a stand mixer and beat on medium until light and fluffy - about 3 - 5 minutes.
Add in the eggs and vanilla and beat on medium until well-combined - about 2 minutes.
Alternate between adding the flour mixture (in three additions) and the buttermilk (in two additions) to the mixer. Start and end with the flour. Fold in the chocolate chips by hand.
Evenly divide the batter among your cake pans and bake for approximately 20 - 25 minutes, or until a toothpick inserted in the center comes out clean. While cake bakes, prepare cookie dough.
Allow cake to cool for 10 minutes, then transfer to a wire rack to cool to room temperature. Once at room temperature, wrap the cakes tightly and chill them in the freezer until needed.
Prepare Cookie Dough:
While cake is baking, beat the butter, Domino® Golden Sugar, and Domino® Light Brown Sugar together until light and fluffy. Stir in the milk and vanilla and mix until just combined.
Mix in the flour and salt until just combined, then fold in the chocolate chips. Set aside.
Prepare Cookie Dough Frosting:
Beat the butter and Domino® Light Brown Sugar together until fully combined. Add in the vanilla and the salt and mix well.
Mix in the flour and stir until just combined, but do not overmix.
Stir in the milk until it reaches your desired consistency. Fold in the chocolate chips.
Assemble Cake and Prepare Ganache:
Remove the cakes from the freezer and level them. Fill a piping bag with some of the frosting. Spread a thin layer of frosting on top of two of the leveled cakes, then pipe a small border around the edges of the cake. Add some of the cookie dough inside the border you piped. Leave some of the cookie dough to decorate the top of the cake.
Layer the cakes on top of each other, leaving the plain cake for the top layer.
Frost the cake with the cookie dough frosting. Chill for about an hour.
Make the ganache by adding the chocolate and cream together in a small, heavy-bottomed saucepan. Heat on medium-low heat, stirring constantly until the chocolate is fully melted and incorporated with the cream. Stir in the oil.
Top the the cake with the ganache. Top the ganache with cookie dough. You can also add whipped cream or more frosting to decorate the cake as you wish.
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Notes
Heat treat the flour for the cookie dough and cookie dough frosting. Heat in the oven at 300F for 10 minutes. Cool completely, then fluff with a fork or sift.