Let the mixture sit for about 5 minutes so that the oats can soak up some of the moisture.
Drop by tablespoon-sized scoops onto a lined baking sheet. Press them down with a spoon or a fork to flatten a little.
Bake at 350°F for 12-15 minutes.
The treats will be done when the oats are slightly browned and the cookies are slightly firm but also spongey, like the top of a cupcake.
Allow treats too cool on a wire rack, then serve or store in an airtight container.
Notes
Store cookies in an air-tight container at room temperature for 3-5 days or up to a week in the refrigerator. You can freeze them for around 6 months. Make sure that you let the cookies cool before serving them to your dogs :)