Pour the popcorn and slivered almonds into the buttered bowl.
In a medium pan, melt butter. Add the maple syrup and a dash of salt. Over medium heat, bring to a boil. Lower the heat and keep at a soft boil until a candy thermometer reads 300°F (about 15 minutes). Stir constantly.
Pour the maple syrup over the popcorn & slivered almonds and mix very well.
Spread the popcorn mixture onto the parchment paper. Let cool completely. Break apart and store in a covered bowl for 4 or 5 days.
Notes
Use fresh popcorn: Make sure your popcorn is freshly popped and free of unpopped kernels to avoid any unpleasant bites.
Stir constantly: Keep the syrup moving while it cooks to prevent burning, especially as it nears 300°F. A candy thermometer is key for getting the right texture.
Work quickly: Once the syrup reaches temperature, pour and mix fast—maple syrup hardens quickly as it cools.
Customize it: Swap slivered almonds for chopped pecans or walnuts, or even add a pinch of cinnamon for a cozy twist.
Storage tip: Once cooled and broken apart, store in an airtight container at room temperature for up to 5 days to keep it crisp.