Line a 12x17 pan with parchment paper.
Add the butter to a large heavy bottomed sauce pan and melt over medium low heat, stirring occasionally. 2 cups salted butter
Add in the sugar, water, and corn syrup and stir into a gooey mixture. Let the sugar dissolve, and stir occasionally. 2 cups granulated sugar , 6 TBS water, 2 TBS light corn syrup
Add the candy thermometer on the side of the pot, making sure it doesn't touch the bottom of the pan.
Raise the heat to medium high stirring often until the temperature reaches 225 F. Once it reaches 225 stir the toffee constantly.
Keep cooking until the toffee mixture reaches 290 F (you want between 290 and 300). Remove from the heat and stir in the vanilla extract. 1 tsp vanilla extract
Pour the mixture into the prepared pan, spreading evenly to the edges.
Let the toffee sit for about 3 to 4 minutes, then run a plastic knife, or pizza cutter over the toffee cutting it into 3x3 or 4x4 inch squares. Go over the cut lines a few times to create marks in the toffee. (It doesn't need to be fully cut through, but needs to be scored so the toffee will break easily on the lines.
Let the toffee sit until it is set. You can place the pan in the fridge to speed this process up. Then separate the toffee into square pieces.
Melt the White Chocolate Wafers in the microwave in 30 second increments, until you can stir it smooth. 25 oz Ghiradelli White Chocolate Melting Wafers
Mix the granulated sugar and cinnamon in a small bowl. 1 cup granulated sugar, 2 TBS ground cinnamon
Sprinkle a thin layer of the cinnamon sugar onto a piece or parchment paper.
Dip each piece of toffee, one at a time, into the melted white chocolate. Remove with a fork, and tap the edges carefully to let extra chocolate drip off.
Place onto the cinnamon sugar topped parchment paper. Sprinkle more cinnamon sugar mixture over the top of the toffee.
Let the toffee sit until the white chocolate is totally set.