Making No Bake Summer Berry Icebox Cake is an effortless process that will yield impressive results. Follow these step-by-step instructions for success:

1. Prepare the Cream Mixture: In a large bowl, whip the heavy cream using an electric mixer until soft peaks form.
2. Add Sweetness: Gradually add the powdered sugar and vanilla extract, continuing to whip until stiff peaks form.
3. Mix in Yogurt: If you’re using Greek yogurt for added creaminess, gently fold it into the whipped cream mixture until fully combined.
4. Layer Bottom: On the bottom of a 9×13-inch baking dish, place a single layer of graham crackers, breaking them as necessary to fit.
5. Spread Cream: Spread a generous layer of the whipped cream mixture over the graham crackers evenly.
6. Add Berries: Sprinkle a layer of mixed berries over the cream mixture, creating a colorful display.
7. Repeat: Add another layer of graham crackers on top of the berries, followed by additional whipped cream and berries. Repeat until you have used all your ingredients, ending with a final layer of whipped cream and berries on top.
8. Chill: Cover the dish with plastic wrap (or a lid) and refrigerate for at least 4 hours to allow the layers to meld together.
9. Serve: Before serving, garnish with fresh mint leaves if desired for a splash of color.

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