Cinnamon Sugar Glazed Almonds

Preheat the oven to 250º F.
Beat the egg whites with a dash of salt until frothy. Gradually add the sugar and vanilla extract and continue to beat until the whites begin to form stiff peaks. Gently fold in the almonds and cinnamon.
Place the melted butter in a large mixing bowl and stir the almonds into the butter, coating them.
Transfer the almonds to a baking sheet lined with parchment paper. Place in oven and bake for 1 hour, stirring them every 15 minutes.
Remove from the oven and let cool completely.