Orange-Walnut Cake - Whole Living

Ingredients

• 1/2 cup olive oil, plus more for the pan
• 1 1/2 cups all-purpose flour (spooned and leveled), plus more for pan
• 1 cup walnuts
• 1 tablespoon freshly grated orange zest, plus more for garnish
• 2 teaspoons baking powder
• 1 teaspoon salt
• 2 large eggs
• 1 cup packed light-brown sugar
• 3/4 cup fresh orange juice
• Confectioners' sugar for garnish
• 1 cup low-fat Greek yogurt
• 2 tablespoons confectioners' sugar