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

In a blender or food processor, blend the spinach and egg together.

Place the oat flour, parsley, mint, spirulina, coconut oil, and spinach-egg mixture in a large bowl. Using your hands or a spoon, combine until the ingredients are evenly distributed.

Stir in a little water at a time, about 1-2 tablespoons, until it becomes a rollable dough.

Place the dough on parchment paper or a lightly floured surface. Roll dough out until approximately 1/4" to 1/3" according to your preference. Use a cookie cutter to cut the dough into shapes. Place the cutouts on the prepared baking sheet. Re-roll and cut until the all the dough is used up.

Bake for 15-18 minutes.

Transfer the treats to a wire rack and allow them to cool completely.