1TbsCampari(optional-replace with 1 Tbs blood orange juice if not using)
Sponge
1cupAll-purpose flour
½cupSemolina
1tspBaking powder
½tspBaking soda
½tspKosher salt
1cupVegan yogurt
½cupExtra virgin olive oil
2TbsBlood orange zest
2TbsBlood orange juice
Equivalent of 3 eggs(Bob's Red Mill Egg Replacer recommended)
½cupEvaporated cane sugar
Instructions
Preheat the oven to 350℉.
Orange Layer
Cut parchment paper to fit the bottom of the cake pan. Arrange the orange slices so they cover the bottom as completely as possible.
Add the orange juice, sugar, and Campari if using to the saucepan. Heat over medium until the sugar is dissolved.
Carefully drizzle the syrup over the oranges. Tilt the cake pan slightly if needed so the syrup coats the bottom evenly.
Sponge
Whisk together the all-purpose flour, semolina, baking powder, baking soda, and salt in a large mixing bowl.
Whisk together the yogurt, olive oil, orange zest, and orange juice in a small mixing bowl.
Prepare the egg equivalent in a small bowl. Add the sugar and whisk to give it some volume.
Whisk the yogurt mixture into the dry ingredients. Then add the egg mixture. Whisk just until you have a smooth batter.
Carefully spoon the batter over the oranges and smooth using the spatula.
Bake for about 40 minutes or until a toothpick inserted in the middle comes out clean. Allow the cake to cool completely. Run a knife around the edge of the cake before carefully flipping it over.
Notes
I recommend buying smaller oranges as they are easier to arrange in the cake pan. I find I generally need 4 small blood oranges total for this recipe.