Creating the No-Bake Strawberries-and-Cream Stack Cake is a straightforward process. Follow these simple steps to assemble your delicious dessert:

1. Prepare the Cream: In a large mixing bowl, whip the heavy cream until soft peaks form. Gradually add powdered sugar and vanilla extract. Beat until stiff peaks form, then set aside.

2. Prepare the Strawberries: Rinse and hull the strawberries. Slice them evenly and set aside a few for garnish. If desired, mix in a spoonful of strawberry jam for added sweetness and flavor.

3. Layering Begins: On a serving platter, lay a single layer of ladyfinger cookies. If using jam, spread a thin layer on the cookies for extra flavor.

4. Add Cream: Spoon a generous amount of the whipped cream over the ladyfinger layer, spreading it evenly.

5. Add Strawberries: Top the whipped cream with a layer of sliced strawberries, gently spreading them to cover the surface.

6. Repeat Layers: Continue the process by adding another layer of ladyfinger cookies, followed by whipped cream and strawberries. Repeat this until all layers are complete. Finish with a final layer of whipped cream on top.

7. Chill: Cover the assembled cake with plastic wrap and place it in the refrigerator for at least 2 hours to allow it to set properly. This step is crucial for the ladyfingers to absorb moisture and soften.

8. Garnish: Once chilled, remove the cake from the refrigerator. Garnish the top with reserved strawberry slices and fresh mint leaves for a stunning presentation.

9. Slice and Serve: Carefully slice the cake into wedges and serve immediately.

By following these steps, you will create a No-Bake Strawberries-and-Cream Stack Cake that is both delicious and visually appealing.