Get the app for your Mac and set up the app Mirror for Roku.To learn how to use Mirror for Roku, simply follow the steps below. Without the aid of an Apple TV, you can use this tool to easily cast and stream videos and other files from your Mac to your TV. This tool is developed solely for TVs with a Roku operating system, and that is why this is one of the best options for you to use to mirror MacBook to Roku. The first tool on our list is the Mirror for Roku. Good thing is that there are feasible ways to mirror Mac to Roku. However, doing this, a good screen mirroring tool is necessary. You’ll be able to cast a Mac screen on a TV like a Roku TV and enjoy it on a larger screen together with your friends and family.