In a mixing bowl, combine the gluten-free graham cracker crumbs and melted butter. Press the mixture into the bottom of a baking dish to form the crust.
Layer the chocolate chips, butterscotch chips, shredded coconut, and chopped nuts evenly over the crust.
Pour the sweetened condensed milk evenly over the top.
Bake in the preheated oven for 25 minutes or until golden brown.