1Heat oven to 350°F. Wrap outside bottom and side of 9-inch springform pan with heavy-duty foil to prevent leaking. Spray inside bottom and side of pan with cooking spray. In large bowl, gently toss pears, 2 tablespoons of the sugar and the rosemary. Layer pear slices in bottom of pan.
2In large bowl, beat eggs and 1 cup plus 6 tablespoons remaining sugar with electric mixer on medium speed 2 minutes or until light and fluffy. Add oil, liqueur and orange peel, beating until blended. On low speed, beat in flour, cornmeal and salt just until blended. Pour batter over pears.
3Bake 1 hour 10 minutes to 1 hour 20 minutes or until toothpick inserted in center comes out clean. Cool completely in pan on cooling rack, about 2 hours. Run knife around edge of pan to loosen cake; place heatproof serving plate upside down on pan. Turn plate and pan over. Carefully remove pan.