Preheat oven to 300F and line a baking sheet with parchment paper.
Add oats to a food processor and grind until a fine powder. Fun fact, if you have any leftover baby oat cereal, this will work as well!
Add bananas and peanut butter and pulse until a sticky dough has formed.
Roll out on a lightly floured surface. Use wheat flour or leftover ground oats.
Cut into any shape that your dog prefers!
Bake treats on a prepared baking sheet for 25-30 minutes or until they have puffed up a bit. They will feel soft when first touched but will harden as they cool.
Store in an airtight container for up to 1 week, in the refrigerator for up to 2 weeks, or in the freezer indefinitely.