Preheat oven to 350°F (175°C). Line a baking sheet with parchment paper and arrange saltines in a single layer.

In a saucepan over medium heat, melt butter and brown sugar together. Bring to a boil and cook for 3 minutes, stirring constantly.

Remove from heat and stir in vanilla extract.

Pour the toffee mixture evenly over the saltines, spreading quickly with a spatula.

Bake for 5 minutes until bubbly.

Remove from the oven and immediately sprinkle white chocolate chips on top. Let sit for 2 minutes, then spread evenly.

In a small bowl, mix cinnamon and granulated sugar. Sprinkle evenly over the melted chocolate.

Allow to cool completely, then break into pieces.