1In a small bowl, mix together the flour, baking powder, baking soda, and salt. Whisk to combine and set aside.
2In a small bowl, mix together the flour, baking powder, baking soda, and salt. Whisk to combine and set aside.
3In a small bowl, mix together the flour, baking powder, baking soda, and salt. Whisk to combine and set aside.
4Chop the Oreo cookies into small pieces and set aside.
5Chop the Oreo cookies into small pieces and set aside.
6Chop the Oreo cookies into small pieces and set aside.
7In a large bowl, beat the butter for 30 seconds.
8In a large bowl, beat the butter for 30 seconds.
9In a large bowl, beat the butter for 30 seconds.
10Add the sugar and the oil to the bowl and beat for 2 minutes until the mixture is creamy and fluffy.
11Add the sugar and the oil to the bowl and beat for 2 minutes until the mixture is creamy and fluffy.
12Add the sugar and the oil to the bowl and beat for 2 minutes until the mixture is creamy and fluffy.
13Add the sour cream and the vanilla to the bowl and mix to combine.
14Add the sour cream and the vanilla to the bowl and mix to combine.
15Add the sour cream and the vanilla to the bowl and mix to combine.
16Add 1/3 of the milk to the bowl and mix on low to combine.
17Add 1/3 of the milk to the bowl and mix on low to combine.
18Add 1/3 of the milk to the bowl and mix on low to combine.
19Then add 1/3 of the dry ingredient mixture to the bowl and mix to combine on low.
20Then add 1/3 of the dry ingredient mixture to the bowl and mix to combine on low.
21Then add 1/3 of the dry ingredient mixture to the bowl and mix to combine on low.
22We're going to alternate the milk and the dry ingredients by adding them to the bowl in thirds.
23We're going to alternate the milk and the dry ingredients by adding them to the bowl in thirds.
24We're going to alternate the milk and the dry ingredients by adding them to the bowl in thirds.
25Add the remaining milk and stir to combine and finish with the rest of the flour and stir on low.
26Add the remaining milk and stir to combine and finish with the rest of the flour and stir on low.
27Add the remaining milk and stir to combine and finish with the rest of the flour and stir on low.
28Set the bowl aside.
29Set the bowl aside.
30Set the bowl aside.
31With clean beaters, whip the egg whites for about 5 minutes until they have stiff peaks.
32With clean beaters, whip the egg whites for about 5 minutes until they have stiff peaks.
33With clean beaters, whip the egg whites for about 5 minutes until they have stiff peaks.
34Add half of the whipped egg whites to the cake batter bowl. Fold with a spatula carefully until combined.
35Add half of the whipped egg whites to the cake batter bowl. Fold with a spatula carefully until combined.
36Add half of the whipped egg whites to the cake batter bowl. Fold with a spatula carefully until combined.
37Add the remaining egg white mixture and add the chopped Oreos along with it and fold gently with a spatula to combine until the batter is incorporated.
38Add the remaining egg white mixture and add the chopped Oreos along with it and fold gently with a spatula to combine until the batter is incorporated.
39Add the remaining egg white mixture and add the chopped Oreos along with it and fold gently with a spatula to combine until the batter is incorporated.
40Divide the batter evenly between 3 8-inch cake pans lined with parchment paper and greased.
41Divide the batter evenly between 3 8-inch cake pans lined with parchment paper and greased.
42Divide the batter evenly between 3 8-inch cake pans lined with parchment paper and greased.
43Bake the cake layers in a preheated oven for 35 minutes or until a toothpick comes off clean when inserted in the cake.
44Bake the cake layers in a preheated oven for 35 minutes or until a toothpick comes off clean when inserted in the cake.
45Bake the cake layers in a preheated oven for 35 minutes or until a toothpick comes off clean when inserted in the cake.
46Remove the cakes from the oven and let them cool down completely before frosting.
47Remove the cakes from the oven and let them cool down completely before frosting.
48Remove the cakes from the oven and let them cool down completely before frosting.
49Place the chopped white chocolate in a bowl along with a 1/4 cup of heavy cream. And then microwave it until the chocolate has melted with the cream.
50Place the chopped white chocolate in a bowl along with a 1/4 cup of heavy cream. And then microwave it until the chocolate has melted with the cream.
51Place the chopped white chocolate in a bowl along with a 1/4 cup of heavy cream. And then microwave it until the chocolate has melted with the cream.
52Let the white chocolate and cream mixture cool down completely.
53Let the white chocolate and cream mixture cool down completely.
54Let the white chocolate and cream mixture cool down completely.
55Beat the cream cheese with a mixer for 45 seconds.
56Beat the cream cheese with a mixer for 45 seconds.
57Beat the cream cheese with a mixer for 45 seconds.
58Add the cold white chocolate and heavy cream mixture to the bowl and beat for 30 seconds to combine.
59Add the cold white chocolate and heavy cream mixture to the bowl and beat for 30 seconds to combine.
60Add the cold white chocolate and heavy cream mixture to the bowl and beat for 30 seconds to combine.
61In a separate bowl, beat the remaining 3/4 cup of heavy cream for 2 to 3 minutes until stiff peaks form.
62In a separate bowl, beat the remaining 3/4 cup of heavy cream for 2 to 3 minutes until stiff peaks form.
63In a separate bowl, beat the remaining 3/4 cup of heavy cream for 2 to 3 minutes until stiff peaks form.
64Add the whipped cream and vanilla to the bowl with the cream cheese and white chocolate mixture and fold to combine.
65Add the whipped cream and vanilla to the bowl with the cream cheese and white chocolate mixture and fold to combine.
66Add the whipped cream and vanilla to the bowl with the cream cheese and white chocolate mixture and fold to combine.
67Add the chopped Oreos and mix.
68Add the chopped Oreos and mix.
69Add the chopped Oreos and mix.
70Beat the butter with a mixer for 30 seconds.
71Beat the butter with a mixer for 30 seconds.
72Beat the butter with a mixer for 30 seconds.
73Add the cream cheese and beat with the butter for 1 more minute.
74Add the cream cheese and beat with the butter for 1 more minute.
75Add the cream cheese and beat with the butter for 1 more minute.
76Add the powdered sugar and the salt and mix on low until incorporated.
77Add the powdered sugar and the salt and mix on low until incorporated.
78Add the powdered sugar and the salt and mix on low until incorporated.
79Raise the speed to medium high and beat for 2 minutes until the mixture is creamy.
80Raise the speed to medium high and beat for 2 minutes until the mixture is creamy.
81Raise the speed to medium high and beat for 2 minutes until the mixture is creamy.
82Add the vanilla and a 1/2 a cup of Oreo crumbs and mix until incorporated.
83Add the vanilla and a 1/2 a cup of Oreo crumbs and mix until incorporated.
84Add the vanilla and a 1/2 a cup of Oreo crumbs and mix until incorporated.
85Place one cake layer on top of a serving plate.
86Place one cake layer on top of a serving plate.
87Place one cake layer on top of a serving plate.
88Brush with some sugar syrup if desired.
89Brush with some sugar syrup if desired.
90Brush with some sugar syrup if desired.
91Pipe a ring of cookies and cream frosting around the edges of the cake layer.
92Pipe a ring of cookies and cream frosting around the edges of the cake layer.
93Pipe a ring of cookies and cream frosting around the edges of the cake layer.
94Spoon some of the cookies and cream mousse in the center. Use a spatula to spread it out evenly.
95Spoon some of the cookies and cream mousse in the center. Use a spatula to spread it out evenly.
96Spoon some of the cookies and cream mousse in the center. Use a spatula to spread it out evenly.
97Top with another cake layer.
98Top with another cake layer.
99Top with another cake layer.
100Brush with the sugar syrup again if desired.
101Brush with the sugar syrup again if desired.
102Brush with the sugar syrup again if desired.
103Pipe a ring of cookies and cream frosting around the edges of the layer.
104Pipe a ring of cookies and cream frosting around the edges of the layer.
105Pipe a ring of cookies and cream frosting around the edges of the layer.
106Spoon more of the cookies and cream mousse in the center. Spread with a spatula.
107Spoon more of the cookies and cream mousse in the center. Spread with a spatula.
108Spoon more of the cookies and cream mousse in the center. Spread with a spatula.
109Top with the remaining cake layer.
110Top with the remaining cake layer.
111Top with the remaining cake layer.
112Spread the cookies and cream frosting on top of the cake and on the sides.
113Spread the cookies and cream frosting on top of the cake and on the sides.
114Spread the cookies and cream frosting on top of the cake and on the sides.
115Use a bench scraper or a cake scraper to smooth out the sides and an offset spatula to smooth out the top.
116Use a bench scraper or a cake scraper to smooth out the sides and an offset spatula to smooth out the top.
117Use a bench scraper or a cake scraper to smooth out the sides and an offset spatula to smooth out the top.
118Then use your hands to attach the remaining 1/2 cup of Oreo crumbs to the side of the cake on the bottom.
119Then use your hands to attach the remaining 1/2 cup of Oreo crumbs to the side of the cake on the bottom.
120Then use your hands to attach the remaining 1/2 cup of Oreo crumbs to the side of the cake on the bottom.
121Place the cake in the fridge for 30 minutes while you make the ganache drip.
122Place the cake in the fridge for 30 minutes while you make the ganache drip.
123Place the cake in the fridge for 30 minutes while you make the ganache drip.
124Heat up the heavy cream until hot and pour over the chopped chocolate in a bowl.
125Heat up the heavy cream until hot and pour over the chopped chocolate in a bowl.
126Heat up the heavy cream until hot and pour over the chopped chocolate in a bowl.
127Whisk until the chocolate has melted entirely.
128Whisk until the chocolate has melted entirely.
129Whisk until the chocolate has melted entirely.
130Let the ganache cool down for about 10 to 15 minutes before pouring on top of the cake.
131Let the ganache cool down for about 10 to 15 minutes before pouring on top of the cake.
132Let the ganache cool down for about 10 to 15 minutes before pouring on top of the cake.
133You can use a spoon or a piping bag to pour the ganache on top of the cake.
134You can use a spoon or a piping bag to pour the ganache on top of the cake.
135You can use a spoon or a piping bag to pour the ganache on top of the cake.
136I like to place the ganache in a piping bag and snip a small hole with scissors on the piping bag. And then I place the piping bag on the edge of the cake and I spin the cake plate around as I let the ganache drip. And then you can pour ganache on top of the cake and use a spatula to smooth it out.
137I like to place the ganache in a piping bag and snip a small hole with scissors on the piping bag. And then I place the piping bag on the edge of the cake and I spin the cake plate around as I let the ganache drip. And then you can pour ganache on top of the cake and use a spatula to smooth it out.
138I like to place the ganache in a piping bag and snip a small hole with scissors on the piping bag. And then I place the piping bag on the edge of the cake and I spin the cake plate around as I let the ganache drip. And then you can pour ganache on top of the cake and use a spatula to smooth it out.
139Place the cake in the fridge for 20 minutes so the ganache has a chance to set.
140Place the cake in the fridge for 20 minutes so the ganache has a chance to set.
141Place the cake in the fridge for 20 minutes so the ganache has a chance to set.
142Pipe the remaining frosting on top of the cake. I use the tip 4B to do this.
143Pipe the remaining frosting on top of the cake. I use the tip 4B to do this.
144Pipe the remaining frosting on top of the cake. I use the tip 4B to do this.
145Then you can decorate the cake with halved Oreo cookies and more cookie crumbs if desired.
146Then you can decorate the cake with halved Oreo cookies and more cookie crumbs if desired.
147Then you can decorate the cake with halved Oreo cookies and more cookie crumbs if desired.