Preheat the oven to 350°F. Line a baking sheet with parchment paper or a silicone mat.

Cook the bacon until crispy and chop it into small pieces.

Peel, core, and chop the apple into small pieces.

Place the bacon, apple, and oat flour in a large bowl. Add the egg and water and stir to combine into a dough.

Place the dough on parchment paper and roll it out. Cut with a cookie cutter. Re-roll and cut until all the dough is used. Place the cutouts on the lined baking sheet.

Bake for 12-15 minutes. Remove from the oven and cool completely on the baking sheet.

Store in an airtight container in the fridge.