Chocolate Caramel Banana Tart

Name: Chocolate Caramel Banana Tart
Ingredients: 1 stick (113gr) unsalted butter, at room temperature; 1/2 cup (60gr) unsifted powdered sugar; 3 egg yolks; pinch of salt; 1 cup (160gr) white rice flour; 1/4 cup (30gr) amaranth flour; 1/4 cup (40gr) tapioca starch; 1/2 teaspoon xantham gum; 1/4 cup (20gr) unsweetened cocoa powder; 1/2 cup (100gr) sugar; 2 tablespoons water; 2 tablespoons heavy cream; 2 tablespoons unsalted butter at room temperature; 1/4 cup peanut butter (your choice smooth or crunchy); 2 small bananas, peeled and mashed; 1 cup semisweet chocolate chunks or chips; 1/2 cup heavy cream