Preheat the oven to 350°F. Lightly grease a 9" round cake pan.
For the cake, in a medium bowl whisk all dry ingredients. In a large bowl, mix the wet ingredients. Add the dry to the wet and gently stir until evenly mixed. Pour into prepared cake pan.
Bake for 20-25 minutes, until a toothpick or fork come out mostly clean.
While the cake is baking, simmer the pineapple juice in a wide, shallow sauce pan until reduced to ⅓ cup.
After cake has cooled for 10-15 minutes, flip onto a serving dish. Distribute pineapple glaze with a basting brush all over the surface of the cake. Garnish with a touch of powdered sugar and pomegranate arils and serve with whipped cream, ice cream, or Greek yogurt.