– 1 1/2 cups sugar – 1/3 cup canola oil – 6 tablespoons butter, softened – 2 large eggs – 1/2 teaspoon vanilla extract – 2 teaspoons grated lemon rind – 2 tablespoons fresh lemon juice (I used Limoncello) – 2 cups all-purpose flour, plus 2 Tablespoons flour – 3/4 cup whole-wheat pastry flour – 2 teaspoons baking powder – 1/4 teaspoon baking soda – 1/4 teaspoon salt – 1 cup buttermilk – 2 Tablespoons sour cream – 2 cups peaches, peeled and diced – cinnamon swirl: – 1/2 cup packed light brown sugar – 2 tsp. cinnamon glaze – 2 cups powdered sugar – 1-2 Tbsp milk