Preheat the oven to 375 degrees F. Line a large rimmed baking pan with 2 layers of foil and top the foil with a sheet of parchment paper.
Stir the maple syrup, sage and cayenne in a small bowl. Dip the bacon in the syrup to coat and arrange the slices on the pan in a single layer.
Bake the bacon until it starts to brown on the underside and tips, about 20 minutes. Flip the bacon and rearrange the slices if it is browning unevenly. Continue to bake until dark all over, 10 to 15 minutes more.
Transfer the bacon to clean parchment paper to cool slightly before serving.