In medium bowl, mix flour, baking powder, 1/2 teaspoon cinnamon and the salt; set aside. In large bowl, beat 1 cup granulated sugar and 1/2 cup butter with electric mixer on medium speed, scraping bowl occasionally, until fluffy. Beat in eggs, one at a time, until smooth. Add vanilla. Gradually beat in flour mixture alternately with milk, beating after each addition until smooth. Spread batter over apple wedges in brown sugar mixture.