Step 1

In a large bowl, use an electric mixer to beat heavy cream, powdered sugar, vanilla and salt until stiff peaks form.

Step 2

Spread a very thin layer of the whipped cream in the bottom of a 9 x 13-inch dish.

Step 3

Place a layer of the graham crackers or chocolate wafers in the bottom of the dish, breaking them as necessary in order to fit.

Step 4

Gently spread ¼ of the whipped cream on top of the crackers. Top with a second layer of crackers and then another layer of whipped cream.

Step 5

Repeat the layers until you have used a fourth layer of crackers and the final ¼ of the cream.

Step 6

Garnish the cake with crushed chocolate grahams, sprinkles, or grated chocolate.

Step 7

Cover loosely and refrigerate for at least 4 hours, or up to overnight.