Line a cookie sheet with foil and place a baking rack on top. Lay bacon slices flat on rack.
In a small bowl, combine brown sugar, maple syrup, bourbon and cayenne to make a crumbly paste and, using your fingers, pat down a thick layer on top of each slice.
Bake for 20-25 minutes or until bacon is crisp with most of the fat rendered off, then allow to cool on rack for at least 30 minutes.