1 1/4cupwhole wheat pastry flourOR oat flour -- see Tips & Tricks, just above recipe
1 1/2teaspoonspumpkin pie spice
1/4cupchopped nutssuch as pecans or walnuts, OPTIONAL
Arrange oven rack in center position and preheat oven to 350°F. Grease a 9- by 13-inch baking dish with coconut oil or softened butter, or coat with non-stick cooking spray.
In a large bowl, stir together the pumpkin puree, coconut oil, honey, egg, and vanilla. In a separate bowl, whisk together the oats, flour, pumpkin pie spice, cinnamon, and salt. Blend the oat mixture into the pumpkin mixture and stir until well-combined.
Scrape the batter into prepared baking dish and smooth the top so that it's an even thickness. Sprinkle with chopped nuts, if using, and lightly press them into the surface. Bake for 20 to 24 minutes or until the edges just start to turn golden brown. Allow to cool for at least 10 minutes before slicing into bars.
Cool completely and store in an airtight container.