Hey Chris. I've been using custom css to achieve this if you're comfortable with this kind of solution. Based on your boxmenu it would be something like this:

.menu-item__inner.boxmenu-item__inner {

position: relative;

}

.menu-item__button-container.boxmenu-item__button-container {

position: absolute;

width: 100%;

height: 100%;

top: 0;

left: 0;

}

.btn-text.menu-item__button.boxmenu-item__button.js-btn-click {

background-color: transparent;

color: transparent;

width: 100%;

height: 100%;

}