Step 1: Prep and cook the bacon, also facon
This is one case where better quality bacon may be ideal... I purchased the sale stuff and it was sub-optimal.
Large Frying pan and oven baking tray are good methods for real bacon.
The Microwave method was used for cooking the Facon. Resist the urge to dip facon in bacon grease. It does little good.
Cut up the bacon/ facon into pieces a couple inches long, and set aside.
Step 2: Prepare and Fill Double Boiler
Put a smaller pan inside a larger pan of water, if your pans have handles, place a suitable spoon, shot glass, or other riser in the water under the smaller pan to help keep the contraption level.
Break up your chocolate and put some in the smaller pan, and turn the heat on to medium (avoid rolling boils, as it will spit water into your chocolate)
(NB: at this point we used Hershey's baking bar... which was described as "slightly sweet" -- we used the Ghiradelli to dip the Spam into later)
Step 3: Add/Prepare additional ingredients
Place finely chopped nuts (both walnuts and pecans were used), on a foil-lined tray to be toasted -- we used the toaster oven for this.
When slightly bittersweet chocolate is almost melted, add some maple syrup and some brown sugar.
Stir until homogeneous.