Cook 11 pieces of bacon until crispy. Place on a paper towel lined plate. Set aside. It's ideal to make this ahead of time even.
Spray a 11x7 baking pan with non-stick cooking spray. I don't think it's necessary about I did it to make sure my treats came out without a fight.
In a large saucepan, add in the marshmallows and butter. Place over medium heat and let it melt together.
Chop the crispy bacon into tiny pieces. Set aside 1 T. of the crumbled bacon for garnish.
Once the marshmallows and butter are completely melted and gooey, add in the maple extract. Stir until combined.
Add in the rice krispies and the crumbled bacon that isn't reserved for garnish. Stir to cover the krispies thoroughly.
Pour the rice krispies into the prepared 11x7 pan. Using a piece of wax paper or parchment paper, press the krispies down into the pan. I don't press down super hard since I like my treats less hard and more chewy. Let cool in pan.
Frosting
In a mixing bowl, add in the butter, maple extract, powdered sugar and milk. Mix on low until incorporated.
Turn the mixer on high and beat an additional minute or two until light and fluffy.
Spread the frosting onto the cooled rice krispies treats. If they're the least bit warm, your frosting will become a gooey mess so be patient!
Sprinkle the reserved tablespoon of bacon on top of the treats. Cut and serve!
Notes
To store any leftover maple bacon rice krispie treats, place in an air tight container and store at room temperature for up to 3 days.