Open up the following file: /plugins/order/views/templates/{order_form_type}/cart.pdt
we will use: /plugins/order/views/templates/wizard/cart.pdt
as we prefer the Wizards.
Find: <a href="<?php echo $this->Html->safe($this->base_uri . "order/main/index/" . $this->Html->ifSet($order_form->label));?>" class="btn btn-sm btn-plain pull-right">
Replace with: <a href="<?php echo $this->Html->safe($this->base_uri . "") ?>" class="btn btn-sm btn-plain pull-right">
You can change the url we've just set it to the dashboard.