For the cake:
¾ cup cake flour
¾ cup all-purpose flour
1 tsp. baking powder
¼ tsp. baking soda
½ tsp. salt
1 cup plus 2 tbsp. granulated sugar
4 large eggs, at room temperature
2 tbsp. grated blood orange zest
2 tbsp. freshly squeezed blood orange juice
16 tbsp. (1 cup) unsalted butter, melted and cooled
¼ cup sour cream
1 tsp. vanilla extract
For the syrup:
3 tbsp. granulated sugar
3 tbsp. freshly squeezed blood orange juice
For the glaze:
1 cup confectioners’ sugar
2-3 tbsp. freshly squeezed blood orange juice
For the candied orange slices:
1 blood orange, preferably organic
½ cup sugar
½ cup water
step 1: Show Images
To make the cake, preheat the oven to 350˚ F. Grease and flour a 9 x 5-inch loaf pan. In a medium bowl, combine the flours, baking powder, baking soda and salt. Whisk to blend and set aside. In the bowl of an electric mixer, combine the sugar, eggs, orange zest and orange juice. With the mixer on low speed, blend in the melted butter. On low speed, mix in half of the dry ingredients just until incorporated. Beat in the sour cream and vanilla until combined. Mix in the remaining dry ingredients, again just until incorporated.
step 2: Show Images
Transfer the batter to the prepared pan. Bake 20 minutes, then rotate the pan and reduce the oven temperature to 325˚ F. Continue baking 30-35 minutes or until a toothpick inserted in the center comes out clean. Let cool in the pan at least 15-20 minutes.
step 3: Show Images
Turn the cake out of the pan and transfer to a wire rack set over a baking sheet. To make the orange syrup, combine the sugar and orange juice in a small saucepan over medium heat, cooking just until the sugar is completely dissolved. Poke the top of the warm cake all over with a toothpick or skewer and pour the orange syrup over the top.
step 4: Show Images
To make the candied orange slices, wash and dry the orange thoroughly. Cut the orange in half lengthwise, then use a sharp serrated knife to make very thin slices of orange. Poke out any seeds in the slices with a toothpick. Combine the sugar and water in a medium saucepan over medium-high heat. Heat the mixture until the sugar dissolves. Add the orange slices to the mixture so that they are in a single layer (none overlapping), reduce the heat to medium-low and let simmer about 20 minutes, turning the slices at least once so both sides are candied. Remove from the heat. Store in a container with the syrup until ready to use.
step 5: Show Images
When the cake is completely cool, combine the confectioners’ sugar and orange juice in a small bowl and whisk to blend until smooth. Adjust the consistency as needed with additional juice or confectioners’ sugar. Drizzle the glaze over the top of the cake and garnish with the candied orange slices. Let stand briefly until the glaze sets. Slice and serve.