Line your apple slices up on a plate.
Use a buttering brush to brush both sides of each apple slice with melted butter, or your favorite butter substitute.
Make sure every inch is coated and keep any remaining chunks of solid butter off the apples.
Otherwise they will cook unevenly and you will not get the nice color and grill marks that you want.
Grill the apple slices directly on the grill grate on medium heat to medium-high heat for about six minutes on either side, or or flip them until grill marks appear.
Do not cook on a tray if you want grill marks, but if they are not important to you and you feel more comfortable cooking with a tray, then do so.
Take the apple slices off immediately to avoid burning and turn off your grill.
By now the smell of the cooked apples will have permeated through the air, and you can enjoy that while carrying on with steps 3 and 4.
Arrange the apple slices on a plate in any pattern you want, or put them in a large bowl for everyone to enjoy.
Sprinkle with cinnamon and drizzle with honey.
If you do have a sweet tooth, add a bit of brown sugar or cinnamon sugar, caramel sauce, maple syrup or even peanut butter, there're no hard rules here, and this one will definitely become your favorite recipe.
Make sure all the slices have a nice coating of each but do not drown the slices in either.
You want to make sure you can still taste the apple through the cinnamon and honey.
If there is not enough cinnamon or honey for your tastes in the recipe, then feel free to add more.
Enjoy with your whole family, or hoard them for yourself if you want. After all, you cooked them.