Preheat the oven to 325 degrees

In a large bowl, add all of the nuts, maple syrup, kosher salt, cayenne pepper, and chopped rosemary.  Mix everything thoroughly. 

Evenly spread out the nut mixture onto a 13 X 18 baking sheet lined with parchment paper and bake for 10 minutes.

Remove the baking sheet from the oven, stir the nuts, and then evenly spread them into a single layer again. (careful not to burn yourself) Put the nuts back into the oven for another 7 minutes.

Remove the nuts from the oven once again. The hot maple syrup will be much thicker and bubbly. If you think the nuts need to brown a bit more, mix and spread out the nuts one last time. Bake for another 2-3 minutes. 

Once you’ve removed the nuts from the oven for the last time, sprinkle with a little more kosher salt while they’re still warm.

Let the nuts cool. They’ll cool quicker if you pull the parchment paper with the nuts off of the baking sheet and onto a cooling rack.

Once the nuts have cooled, serve them in a pretty little bowl. Store the remaining nuts in a container.