Whip the cream by pouring 2 cups of heavy cream into a large mixing bowl and whip on medium-high speed until stiff peaks form (3-5 minutes).

Mix the cream cheese mixture by combining 8 oz of softened cream cheese, 1 cup of powdered sugar, and 1 tsp of vanilla extract in a separate bowl. Blend until smooth (2-3 minutes).

Combine the whipped cream with the cream cheese mixture by gently folding a third of the whipped cream into the mixture, then gradually add the rest.

Layer the ingredients by placing a layer of Birthday Cake Oreos in a 9x13 inch dish, then spread half of the cream mixture over the Oreos.

Add more Oreos by repeating the layering process with another layer of Birthday Cake Oreos on top of the cream mixture, then spread the remaining cream mixture evenly over the top.

Top with sprinkles by generously sprinkling colorful sprinkles over the cake before chilling.

Chill the cake by covering the dish and placing it in the refrigerator for at least 4 hours, ideally overnight.