Creating the No Bake Summer Berry Icebox Cake is a straightforward process. Follow these steps for a successful outcome:

1. Prepare the Cream Mixture: In a large mixing bowl, whip the heavy cream until soft peaks form. Gradually add the powdered sugar and vanilla extract. Continue whipping until stiff peaks form.

2. Layer the Ingredients: In a rectangular dish (9×13 inches works well), spread a thin layer of the whipped cream mixture on the bottom.

3. Add the Graham Crackers: Place a layer of graham crackers over the whipped cream. Make sure they’re evenly distributed.

4. Second Layer of Cream: Spread another layer of the whipped cream mixture over the graham crackers, smoothing it out evenly.

5. Add Berries: Add a layer of sliced strawberries, blueberries, and raspberries over the whipped cream.

6. Repeat the Layers: Continue layering with another set of graham crackers, followed by whipped cream, and berries until all ingredients are used, finishing with a layer of whipped cream on top.

7. Chill the Cake: Cover the dish with plastic wrap and refrigerate for at least 4 hours or overnight to allow it to set, helping the flavors to develop.

8. Serve: Once set, slice the cake into squares for serving, garnishing each slice with fresh mint leaves if desired.

These simple steps will help you create this incredible dessert that’s sure to impress!