Grease a standard loaf pan with a little olive oil. Line with a piece of parchment paper. Set aside. Move a rack to the middle of the oven.
In a medium bowl, whisk together the oat flour, almond flour, baking powder, baking soda, salt, and ground spices.
In a large bowl, whisk the coconut sugar and maple syrup into the olive oil. Add the eggs one at a time and whisk well to combine. Whisk in the vanilla and pumpkin. Gently stir in the flour mixture and stir to combine.
Pour the batter into the prepared pan. Smooth the top. Turn the oven and and heat to 350 F, letting the batter rest in the pan while the oven preheats.
When oven is ready, place the pan in the oven and cook for at least 60 minutes, checking after 55 minutes, to see that a tester inserted in the center comes out clean, the top is slightly firm when pressed, and the edges are starting to come away from the edge of the pan.
Remove loaf from oven and place on a wire rack to cool. Cool for about 15-20 minutes in the pan, then turn out on the rack to cool completely. Let loaf cool completely before cutting and serving.
Bread will keep, well wrapped in the fridge, for up to 5 days.