Making the No Bake Summer Berry Icebox Cake is as easy as 1-2-3. Follow these simple steps to create this delightful treat:

1. Prepare the Cream: In a large bowl, whip the heavy cream until it begins to thicken.
2. Add Sugar and Vanilla: Gradually add the powdered sugar and vanilla extract while continuing to whip until soft peaks form.
3. Layer the Bottom: In your serving dish, create a layer using graham crackers, covering the bottom completely.
4. Spread Cream: Spread about one-third of the whipped cream mixture evenly over the graham crackers.
5. Add Berries: Evenly sprinkle half of the sliced strawberries, blueberries, and raspberries over the whipped cream layer.
6. Repeat Layers: Repeat the layering process two more times—another layer of graham crackers, whipped cream, and the remainder of the berries.
7. Top Layer: Finish with a final layer of whipped cream and garnish with a few extra berries on top.
8. Cover and Chill: Cover the dish with plastic wrap and refrigerate for at least 4 hours, preferably overnight.
9. Slice and Serve: When ready to serve, cut into squares and enjoy the delicious layers.

By following these steps, you will create a stunning No Bake Summer Berry Icebox Cake that will impress everyone!