Wash and dice the strawberries.
Place the strawberries in a bowl with granulated sugar.
Stir and let sit for 15 minutes to release their juices.
In a large bowl, beat the heavy cream, powdered sugar, and vanilla until stiff peaks form.
Place a layer of cake cubes into the bottom of each serving cup.
Add a layer of strawberries.
Top with a layer of whipped cream.
Repeat the layers until the cups are full.
Finish with whipped cream and extra strawberries on top.
Chill for 15 to 30 minutes before serving if desired.