Preheat the oven to 350ºF. Grease a 9x5-inch loaf pan with olive oil and line with parchment paper.
In a large bowl, whisk together the almond flour, oat flour, nutmeg, cinnamon, baking powder, baking soda, and salt.
Make a well in the dry ingredients and add the eggs, 1/3 cup olive oil, orange juice, honey, and vanilla extract. You can add the orange zest here as well if desired.
Whisk together the wet ingredients in the well of the dry ingredients.
Gently fold together the wet and dry ingredients using a rubber spatula until the batter isalmost fully combined.
In a medium bowl, add the apple, dates, pecans and 1 tablespoon of oat flour. Toss everything to combine (the oat flour prevents the apples and dates from sinking in the cake). Add the apple mixture to the cake batter and gently stir to combine.
Pour the batter into the prepared cake pan and bake in the center of the oven for 40 to 45minutes. Then cover with foil and bake another 10 to 15 minutes until golden brown and an inserted toothpick comes out clean.
Allow the cake the cool for 20 minutes in the loaf pan then flip onto a baking rack.
Meanwhile, make the orange honey glaze. In a small bowl, add the honey, orange juice, and orange zest and mix to combine.
Brush the warm cake with the orange glaze. Allow to set for a few minutes then serve.