Preheat the oven to 350F. Spray the bottom of a 9X5 loaf pan to prevent bread from sticking.
In a large bowl, combine the oat flour, almond flour, baking powder, baking soda, salt, and cinnamon: set aside.
In a medium bowl, using a hand or stand mixer on low, mix together the yogurt, honey, eggs, olive oil, blood orange zest and juice and vanilla until well combined. Add wet ingredients to the dry ingredients and mix on until just combined. It’s ok if a few streaks of flour remain, you don’t want to over mix it!
Pour into the prepared loaf pan and bake for 40-45 minutes.* The loaf is done when a toothpick inserted into the center comes out clean with a few crumbs attached.
Remove from the oven and place the pan on a wire rack to cool. In the meantime prepare the blood orange frosting by mixing the confectioners sugar and blood orange juice together with a spoon in a small bowl.
Once the loaf is slightly cool, drizzle the frosting on top and top loaf with extra blood orange slices. Cut into slices and enjoy!
Store in the fridge or covered on your counter for 3 days.
* The edges of the loaf might come out a little darker than the top. This will not impact the taste. If you do notice it getting dark on the top while baking tent with tin foil.