Step 1

In a small saucepan, heat the apple cider over medium heat, stirring occasionally, until it comes to a low boil.  Continue to simmer, stirring every minute or two, until it is reduced to 1/2 cup, around 10 minutes. You can also do this in the microwave using a 2-cup Pyrex measuring cup, so it's easy to see when the cider has reduced to 1/2 cup. Make sure to cover it! This will take about 8-9 minutes in the microwave.

Step 2

While the cider is reducing, cut the butter into 1/2 inch cubes. When cider has reduced to 1/2 cup, add the butter and stir until butter is melted. If using the microwave, you may need to put it back in for 30 seconds to help the butter along. Allow the mixture to cool for a couple of minutes.

Step 3

Preheat your oven to 350 degrees F. Grease an 8x8 inch pan or line with parchment paper, and set aside.

Step 4

In a large bowl, combine the apple cider/butter mixture and brown sugar, and whisk to combine. Add the egg and whisk until mixture thickens and becomes smooth.

Step 5

Add vanilla, cinnamon, nutmeg, cloves, baking powder, and salt, and whisk until combined.

Step 6

Add the oats and flour. Stir gently until a batter forms and there are no pockets of flour. Do not over mix!

Step 7

Spread batter into the prepared pan. Bake for 25 minutes, or until a toothpick inserted in the center comes out clean and the edges pull away from the sides of the pan.

Step 8

Brush melted butter over the baked bars, and sprinkle evenly with the granulated sugar. You can mix a little more cinnamon in with the sugar if you want! I didn't think it was necessary as the bars are quite spiced already, but it's individual preference.

Step 9

Let cool completely in the pan before removing and cutting evenly into 16 bars. Enjoy!