Gooey Salt and Caramel S'mores Brownies
Vanilla bean extract can be substituted for vanilla extract. Rice or almond flour can be substituted for all-purpose.
Any kind of nut can be substituted for the walnuts.
Caramel sauce can be store bought or made with heavy whipping cream and caramel candies.
Watch for over-cooking. Because these are fudge, they will seem uncooked until cooled down, so watch out. If they seem under-cooked after cooled, then just pop in the oven for another 10 minutes.