In a large skillet, add diced bacon. Cook for 10-15 minutes until just barely crispy, stirring frequently.
Drain grease from skillet. Return bacon to hot skillet, add brown sugar, rice wine vinegar, maple syrup, black pepper and optional cayenne and/or thyme.
Simmer for 2-3 minutes until bubbly, stirring frequently.
Line a baking tray or small ceramic dish with aluminum foil, then lightly spray foil with cooking spray.
Add brie to baking tray, then top with candied bacon mixture.
Bake for 10-12 minutes, or until brie is starting to become gooey inside but not runny.
Allow to rest for about 10 minutes before digging in.
Use a sharp knife to cut into brie and serve warm with crackers.
Notes
Bacon topping will be hard and crunchy, like hard candy or brittle.If you'd like the bacon topping to be soft and loose, bake the brie, THEN add the topping directly from the skillet and serve.If you do not have rice wine vinegar, substitute white vinegar or apple cider vinegar.