01 -
Fry the bacon in a nonstick skillet over medium heat until deeply crisp, 6-8 minutes. Transfer to paper towels to drain.
02 -
Stir the maple syrup with cinnamon and cayenne in a small bowl. Set aside.
03 -
Slice each donut in half horizontally. Spread softened butter on the cut sides of all four halves.
04 -
Heat the same skillet over medium-low. Place the donut halves cut-side-down and cook for 2-3 minutes until golden and slightly crisp. Watch closely so the sugar does not burn.
05 -
Flip the bottom halves. Add two slices of cheddar and the crispy bacon to each. Drizzle with the maple mixture. Top with the remaining donut halves, press gently, and cook for 1-2 minutes until the cheese melts. Serve warm.