For Doughnuts:

• Preheat oven to 325°F. Generously grease a 6-cup doughnut pan with non-stick cooking spray and set aside.
• In a small skillet, melt butter over medium heat. Add onions and stir occasionally until onions become translucent and caramelized. Remove from heat and transfer to small bowl. Set aside.
• In a medium mixing bowl, combine flour, baking powder, and salt. Mix well and set aside. In a separate bowl, mix sugar and butter well. Add egg and milk. Add the flour mixture and mix until combined. Fold in cheese and onion. Mix to combine well.
• Transfer batter to doughnut pan evenly between the six cups. Transfer to oven and bake for 12 minutes. Remove doughnuts from oven and allow to cool. Once cooled, gently remove doughnuts from pan.

For Glaze:

• In a small sauce pan, heat syrup, extract, and butter over medium-low heat. Stir until butter melts.
• Remove from heat and transfer syrup to a medium bowl. Add powdered sugar and whisk until creamy.

To Finish:
Transfer crumbled bacon to a platter. Dip the top of a doughnut in the maple glaze then dip in bacon. Gently press doughnut on bacon to ensure bits adhere. Rest doughnut on a separate platter. Repeat with remaining doughnuts. Serve warm.