Add Maria cookies, butter, and brown sugar to a food processor. Process for about 2 minutes, until it is all incorporated. Press mixture into a 9-inch pie dish. Bake for about 7 to 10 minutes, until the surface is golden brown. Let cool.
Filing
Scrape the dulce de leche into the pie crust. Evenly sprinkle sea salt over the caramel. Set aside.
In a small saucepan, add guava paste and water. Use medium heat to melt the guava paste. Spread the guava sauce over the dulce the leche.
Topping
In a bowl, mix the sour cream and sugar together. Spread the cream on top of the pie and refrigerate for at least 2 hours before serving. Top with whipped cream if desired.
Notes
~ Free Tip ~
Instead of cooking guava paste, use a food processor to blend it together with the water until smooth and creamy.
Reserve a tablespoon of guava to decorate the topping, if you wish. Drop small amounts and swirl around with a tip of a knife or toothpick.