Preheat the oven to 350°F and line a baking sheet with parchment paper.

In a large bowl, mix the pumpkin puree and peanut butter until smooth and well combined.

Add the egg and honey, if using, and stir until fully incorporated.

Gradually add the whole wheat flour and rolled oats, stirring until a soft dough forms that holds together.

If the dough seems too dry or crumbly, add the water and mix until the dough is smooth and slightly tacky.

Lightly flour a clean work surface and place the dough on it, then dust a rolling pin with flour.

Roll the dough out to about 1/4 inch thickness in an even layer.

Use a sharp knife or pizza cutter to cut the dough into strips about 1/2 inch wide.

Take each strip by the ends and gently twist in opposite directions to form a spiral shape.

Place the twisted strips on the prepared baking sheet, leaving a little space between each one.

Bake for 20 to 25 minutes, until the twists are firm to the touch and lightly golden on the edges.

Remove the baking sheet from the oven and let the chew twists cool completely before serving to your dog.