In a skillet, heat maple syrup just above medium heat for 1-2 minutes.
Add in vanilla and sea salt and stir.
Add the nuts and stir constantly to coat.
Once nuts are coated, add cinnamon and again stir to coat nuts.
Continue to stir the nuts as the maple begins to boil until all of maple seams to have been absorbed and there is no more liquid in the skillet.
Remove from stove and pour mixed nuts evenly over parchment paper to cool.
Once cooled, break apart and enjoy!
Store in an airtight container.