**Prepare the Whipped Cream:**
In a mixing bowl, whip the heavy cream, powdered sugar, and vanilla extract until stiff peaks form. Set aside.
**Assemble the First Layer:**
Spread a thin layer of whipped cream at the bottom of a 9x13-inch baking dish. Arrange a single layer of Ritz crackers over the whipped cream.
**Add Caramel and Whipped Cream:**
Drizzle a generous amount of caramel sauce over the crackers. Spread an even layer of whipped cream on top.
**Repeat the Layers:**
Continue layering Ritz crackers, caramel sauce, and whipped cream until all the ingredients are used, ending with a layer of whipped cream on top.
**Chill the Cake:**
Cover the dish with plastic wrap and refrigerate for at least 4 hours, or preferably overnight, to allow the layers to set and flavors to meld.
**Garnish and Serve:**
Before serving, drizzle additional caramel sauce over the top and sprinkle with sea salt flakes for a touch of salty-sweet flavor. Slice and serve chilled.