In a mixing bowl, combine the mashed sweet potato, plain yogurt, natural peanut butter, olive oil, and egg. Whisk together until smooth.

Gradually add the whole wheat flour and oats to the mixture, stirring until fully combined. If desired, mix in the cinnamon for an extra flavor boost.

Preheat your waffle maker according to the manufacturer’s instructions. Lightly grease it with a bit of olive oil to prevent sticking.

Pour an appropriate amount of the batter onto the waffle maker (about 1/4 cup per waffle), close the lid, and cook until the waffles are golden brown and cooked through (approximately 4-5 minutes).

Once done, carefully remove the waffles using a spatula and let them cool on a wire rack.

Cut the waffles into bite-sized pieces suitable for your dog, and serve them as a delightful treat!