Preheat oven to 350F.

Melt the butter in a saucepan. Remove from heat and allow to cool slightly.

Add the butter to a skillet set over medium heat. Cook until the butter begins to brown, about 3-4 minutes. Remove from the heat and transfer to a heatproof bowl. Let cool for 5 minutes.

To a large bowl add sugars and butter. Mix to combined.

Scrape down the sides of the bowl and add in the apple butter, egg yolk, and vanilla. Beat well to combine.

Add in flour, baking soda, cinnamon, and salt. Mix until just combined.

Mix together the cinnamon and sugar for coating in a shallow bowl.

Scoop dough into 12 equally sized balls and coat each into the cinnamon sugar mixture. Place onto a baking sheet.

Bake for 8-10 minutes.

Remove the pans from the oven and allow to cool for 5 minutes before removing to a cooling rack.

In a medium sized bowl combine butter, powdered sugar, vanilla extract, cinnamon and 1 tbsp heavy cream. Mix until light and fluffy adding additional heavy cream if needed to get the frosting to the desired consistency.

Once cookies have completely cooled add frosting to a piping bag and add a circle of frosting to 1/2 of the cookies. Fill the center of each cookie with 1-2 tbsp of apple butter and top with a second cookie to create a sandwich.

Store in an airtight container and enjoy.