Preheat oven to 350°F. Spread crackers evenly on parchment-lined baking sheet.
Melt butter in saucepan. Add sugar, vanilla, and cinnamon. Stir until dissolved. Boil 2-3 minutes until thickened.
Pour caramel over crackers, coating evenly. Sprinkle with salt.
Bake 7-9 minutes, watching carefully to prevent burning.
Let cool completely before breaking into clusters. Store in airtight container.
