Adapted from Great Food Great Beer
2 cups all-purpose flour
1 tsp baking soda
1 tsp baking powder
1/2 tsp salt
1 tsp cinnamon
2 cups sugar
7 T unsalted butter, room temperature
2 egg whites
1/4 cup applesauce
1 tsp vanilla extract
1 cup dried cranberries (Craisins)
3 large apples, chopped into small pieces
1 T lime juice (you can use lemon if you prefer), plus 1 tsp zest
1/2 - 3/4 cup powdered sugar
1 T milk
Preheat oven to 325 degrees and butter a 13x9" baking dish. Combine flour, baking soda, baking powder, cinnamon and salt in a mixing bowl and set aside.
In another large mixing bowl, beat butter and sugar together until light and fluffy. Add egg and egg whites, one at a time, beating after each addition. Add applesauce and vanilla. Gradually add the flour mixture, stirring just until combined. Chop apples, you don't need to peel them but you can if you prefer. Toss with lime juice and zest and add to batter along with the cranberries. Stir gently to incorporate and transfer batter to prepared baking dish.
Bake about one hour until a toothpick inserted in the center comes out clean. The bars will puff up in the oven but settle a bit as they cool, becoming more dense. Cool completely.
Whisk together powdered sugar and milk to make a glaze. Drizzle over the pan and cut into pieces. If you can't wait until they are cool, don't worry they are perfect warm with a scoop of vanilla ice cream.