Step 1

In a medium-sized saucepan, add butter, heavy cream, granulated sugar, brown sugar, salt, and cinnamon. Stirring continuously, bring mixture to a boil until the temperature reaches 235 degrees F.

Step 2

Remove pan from heat and add vanilla, do not stir mixture.

Step 3

Allow mixture to cool to about 105 degrees F, or for about 30 minutes.

Step 4

Vigorously stir the mixture for 1-2 minutes until it thickens. Add powdered sugar and pecans and continue stirring until the mixture loses its shine.

Step 5

Spoon fudge onto a sheet of parchment paper and roll into log shape.

Step 6

Refrigerate fudge for 1-2 hours or until firm.

Step 7

Slice and serve chilled.