Line a 8x8 dish with parchment paper or grease well with butter.

Using a good thick pot; add both sugars, milk, coffee, and corn syrup. Bring to a rolling boil over medium high heat. Reduce heat to low.

Simmer on low; stirring occassionally, until temp reaches 235 or soft ball forms in glass of cold water. ( See pic above) remove from heat (This is roughly around 10-15 min)

Quickly stir in your peanut butter and your vanilla;mix well. Working quickly; pour into your dish.

Allow to cool completley before cutting into small squares.