Absolutely! These Hello Dollies are amazing just the way they are AND they are also perfect for customizing. Here are a few ideas for ways to tweak your bars but don’t be afraid to branch out and get creative. - Instead of a graham cracker crust, use Oreos, ginger snaps, vanilla wafers, or any of your favorite cookies.  - Replace the semi-sweet chips with dark chocolate, white chocolate, or a blend of the two.  - Add a layer of caramel chips, peanut butter chips, or candy bar bits. A crushed Heath bar is a great option.  - Incorporate walnuts, almonds, macadamias, or any of your favorite nuts.  - You can easily make this recipe gluten-free by choosing gluten-free graham cracker crumbs. For a dairy-free version, use coconut oil rather than butter, vegan-friendly chocolate chips, and sweetened condensed coconut milk in place of regular.