Add sweetened condensed milk, cream and peanut butter to a bowl. Whisk until well combined. Set aside for later.
1 14 ounce can Sweetened condensed milk, ¾ Cup Peanut butter, ½ Cup Heavy cream
Combine butter, salt and brown sugar in a saucepan. Heat over medium heat until the butter and sugar are melted. Remove pan from heat.
8 Tablespoons Unsalted butter, ½ Teaspoon Sea salt, ½ Cup Brown sugar
Add condensed milk/cream/peanut butter mixture to saucepan. Whisk until well combined. If needed, place saucepan back on low-heat and whisk until smooth.
Pour filling into tart pan over the chocolate crust.
1 11" or 12" Fully baked chocolate tart shell
Bake for 10 minutes. Remove from oven and place on wire rack to cool completely.
Chocolate Topping
Place chocolate and butter in a bowl.
1 Cup Bittersweet chocolate, 3 Tablespoons Unsalted butter
Combine cream and corn syrup in a saucepan and bring to a low boil.
1 Tablespoon Light corn syrup, ¼ Cup Heavy cream
Pour the cream / corn syrup over the chocolate / butter. Let stand for 5 minutes, then whisk until smooth.
Pour the chocolate topping over the caramel. Place in refrigerator for 1 hour or until chocolate topping has set. Decorate as desired.