Step 1

Heat oven to 350°F (325°F for dark or nonstick pan). Spray bottom and sides of 13x9-inch pan with baking spray with flour.

Step 2

In medium bowl, stir together flour, 1/2 cup brown sugar and the salt. With pastry blender or fork, cut in butter until mixture is crumbly. Set aside.

Step 3

In a large bowl, gently stir together Apple Mixture ingredients; set aside.

Step 4

In large bowl, beat Cake ingredients with electric mixer on low speed 30 seconds, then on medium speed 2 minutes, scraping bowl occasionally. Pour into pan.

Step 5

Arrange apple mixture evenly over cake batter and sprinkle with Topping.

Step 6

Bake 45 to 50 minutes. Cool completely, about 2 hours.