This gluten-free orange olive oil cake is tender, fragrant, and full of bright citrus flavor. Almond flour gives it a rich, moist crumb, while a simple loaf-pan bake makes it an easy dessert to serve with coffee or tea.
Preheat the oven to 325°F (165°C). Lightly grease an 8-by-4-inch loaf pan with olive oil and line it with parchment paper, leaving enough parchment over the sides to use as handles.
In a large mixing bowl, stir together the almond flour, baking powder, and salt.
In a separate bowl, beat the olive oil and sugar with a hand mixer. The sugar will not dissolve completely into the oil.
Beat in the eggs until smooth; the mixture will become quite thick. Stir in the orange zest and orange juice.
Add the olive oil mixture to the almond flour mixture. Stir with a wooden spoon until everything is combined and no streaks of flour remain.
Pour the batter into the prepared loaf pan and spread it evenly.
Bake for 40–45 minutes, until the cake is golden brown and a toothpick inserted into the center comes out clean. The cake will rise only slightly.
Use the parchment handles to lift the cake from the pan and transfer it to a wire rack to cool. If desired, decorate with orange slices and powdered sugar.