Recipe Exchange; Feb 08

So I decided to jump on the bandwagon on the nest's whats for dinner board and join the recipe exhange this month was "healthy" food recipes or at least what one thinks is healthy. So i have recieved this wonderful Pineapple upsidedown cake, recipe courtesy of Martha Stewart. Unknown who submitted it for the exchange.


Serves 8
1/3 cup vegetable oil, such as safflower, plus more for pan
1 cup packed light-brown sugar
1 ripe firm pineapple (skin removed), cut into 16 thin wedges and cored (see note, above)
1 cup all-purpose flour (spooned and leveled)
1/2 cup whole-wheat flour (spooned and leveled)
1 1/2 teaspoons baking powder
1/2 teaspoon baking soda
1/2 teaspoon salt
3/4 cup low-fat buttermilk
2 large eggs
1 teaspoon pure vanilla extract


Preheat oven to 350 degrees. Brush a 9-inch square baking pan with oil; line with a strip of parchment paper, leaving an overhang on two sides. Brush paper with oil. Sprinkle bottom of pan with 1/4 cup sugar. Trim pineapple wedges to no more than 4 to 5 inches long; arrange in pan in groups of four, alternating direction.
In a medium bowl, whisk together flours, baking powder, baking soda, and salt; set aside.
In a large bowl, whisk together buttermilk, eggs, vanilla, oil, and remaining 3/4 cup sugar. Add flour mixture; mix just until combined. Pour batter over pineapple. Tap pan firmly on counter to settle batter, then smooth top.
Bake until a toothpick inserted in center of cake comes out clean, 50 to 60 minutes. Cool 20 minutes in pan; invert onto a serving platter (peel off and discard paper

MY SUBSTITUTIONS:
I used Olive Oil instead of vegetable oil,
3/4 Cup Light Vanilla Yogurt instead of buttermilk