Blood Orange Upside Down Cake

Ingredients

• 2 tablespoons extra virgin olive oil
• 1/4 cup light brown sugar
• 3 medium size blood oranges, very thinly sliced, seeds removed
• ½ cup semolina flour
• 1 cup all-purpose flour
• 1/3 cup coarsely ground cornmeal
• 1 teaspoon baking powder
• 1/2 teaspoon baking soda
• 1/4 teaspoon kosher salt
• 1 ¼ cup sugar
• 1 1/2 tablespoons finely grated blood orange zest
• ½ cup extra virgin olive oil
• 3 large eggs, room temperature
• 1 1/2 teaspoons Fiori di Sicilia, optional*
• 2 tablespoons freshly squeezed orange juice
• 3/4 cup Greek yogurt
• ¾ cup mascarpone
• Extra virgin olive oil for serving, optional