Preheat oven to 400°F and prepare a sheet pan with parchment paper.
Stir together mashed sweet potato and peanut butter.
Mix the flour into the wet ingredients with a spoon or your hands until fully combined. The dough will be a little sticky but should be easy to roll out. If the dough seems too dry, you can add a splash of water or oat milk. If the dough is too sticky to roll out, just add a bit more flour.
Transfer the dough to a silicone mat or sheet of wax paper and roll out to between ¼” and ½” thickness. If the dough is too sticky, cover the dough with another piece of wax paper and roll out.
Cut out your treats using a cookies cutter of your choice or simply slice the dough into small square treats.
Transfer the cut out treats to your lined sheet pan and bake at 400°F for 12-15 minutes. For softer treats bake for 10-12 minutes and for crunchier treats bake for 15 minutes.
Allow to cool completely and store in an air-tight container in the fridge for up to one week or freeze for up to 2 months.