===Ingredients===
For the topping:
    * 1/3 cup light brown sugar
    * 1/2 cup granulated sugar
    * 1/2 cup chopped walnuts
    * 1 tsp ground cinnamon

In a bowl, combine the light brown sugar and granulated sugar.  Stir in the walnuts and mix well.  Set aside.

For the cake:
    * extra butter (for the pan)
    * 2 cups flour
    * 1 tsp baking powder
    * 1/2 tsp baking soda
    * pinch of salt
    * 1 cup (2 sticks) of unsalted butter, at room temperature
    * 1 1/4 cups granulated sugar
    * 2 eggs
    * 1 tsp vanilla extract
    * 1 cup sour cream
    * 2 large baking apples, peeled and sliced

===Technique===
  - Set the oven to 350.  Generously butter a 13-by-9 inch paking dish.
  - In a bowl, stir together the flour, baking powder, baking soda, and salt.
  - With an electric mixer, cream the butter and sugar until fluffy.  Scrape down the sides of the bowl.  Add the eggs, one at a time. followed by the vanilla.
  - With the mixer set on its lowest speed, beat the flour mixture into the batter alternately with the sour cream, beginning and ending with the flour.
  - Spread half the batter in the baking dish.  Sprinkle with about 1 tablespoon of topping.  Cover with apples and another tablespoon of topping.  Spread the remaining better on top.  Sprinkle with the remaining topping.
  - Bake the cake for 40 minutes, until a toothpick inserted into the middle comes out clean.
  - Let the cake cool on a rack for 30 minutes.  Cut into large squares and serve warm.


Source: Boston Globe, Sarah Hearn
tags: vegetarian