For extra flavor, toast the nuts by spreading them on a sheet pan and baking at 350˚F for 6-7 minutes until fragrant.
Finely chop all dried fruit. In a food processor, pulse the fruit and nuts until finely chopped. Add all other ingredients (except sugar) and pulse until sticky and well combined.
Use a 1 tablespoon cookie scoop to portion out the plums, then shape them into ovals. Optionally, use a toothpick to make an indentation on the front. Roll in sugar until well coated and (optional) insert a small rosemary sprig on top as a stem. Enjoy!