After the patty has been made all thats left is to grill it! Obviously grilling can be done, over medium to medium-high heat for about 5mins a side. If your grilling a garden/boca burger from frozen it may take a little longer, and you’ll want to start at a lower heat or it won’t cook all the way through.
Another cooking option if your inside is to pan sear it. This method requires a small pan, hard anodized or cast iron (ie a skillet) work best as they do better to distribute their heat evenly over over the entire surface of the patty over the course of cooking it. From there, you heat the pan at high heat, place a dalop of butter or spray on some pan then turn it down to medium and throw the patty on top for about 2-3minutes. You want to get a good sear without totally burning the side. This will have the effect of lightly caramelizing the patty. from there another small dalop of butter or spray of pam and flip it for about the same length of time.