In a medium bowl, stir together wafer crumbs, melted butter, sugar, and salt. Using the back of a measuing cup, press mixture into bottom of a 9-inch square baking pan. Freeze until firm, about 30 minutes.
Spread dulce de leche onto prepared crust. Top with banana slices.
In a medium bowl, beat pudding mix, cold milk, and cold cream with a mixer at medium speed until thick and smooth, about 2 minutes. Spread onto bananas. Spread whipped cream onto pudding. Cover and refrigerate for at least 4 hours before serving or up to 2 days. Garnish with vanilla wafers, if desired. Cut into bars to serve.
Recipe by Paula Deen Magazine at https://pauladeenmagazine.com/banana-pudding-caramel-bars/