First off you gotta make the dulce de leche. I'll tell you the way I do it and if it scares you google other ways to do it that might be- safer!
1 can of sweetened condensed milk, sill in the can, with the label removed, submerged in water in the crockpot on low for 10 hours. I usually put in 3 at a time and leave it over night. The dulce de leche keeps for a long time in the fridge.
Slice 1-2 bananas over the bottom of the crust.
Spread the dulce de leche over the bananas.
Whip up 1/2 pint of whipping cream and spread over the dulce de leche. Then decorate with something to cover up the nasty spoon marks left on the whipping cream:) I used toffee bits.
Ta da!! Most amazing desert EVER!