You can use premade whipped topping and just spread on the cake, or you can use this homemade method.
Pour the heavy whipping cream into the bowl of a stand mixer, or you can use a hand mixer.
Whisk until the cream stiffens and makes stiff peaks.
Add in powdered sugar slowly and make sure it is completely combined.
Once the cakes are cool, even with a serrated knife or cake leveler.
Lay one layer of cake on a cake board or plate and top with a generous amount of the whipped topping and on some fresh strawberries if you like.
Add another later of cake and continue.
Cover the outside of the cake in whipped topping and top with fresh strawberries and I also added some cookies and cream Lindor truffles! Yum!
Enjoy!