Heat oven to 350 F.

In medium bowl, mix apples, cinnamon and 5 tablespoons sugar until combined. Set aside.

In large bowl, mix flour, 2 cups sugar, baking powder and salt until combined. Form well in middle of mixture. Add oil, eggs, orange juice and vanilla; mix until blended.

In springform pan, pour half of batter. Add apple mixture. Pour remaining batter over apple mixture. Sprinkle remaining sugar over batter.

Bake 40-50 minutes, or until top is golden brown and tester comes out clean and dry.

Drizzle with icing, if desired.