1 Warmth oven to 350°F (325°F for darkish or nonstick pan). Spray backside and sides of 13×9-inch pan with baking spray with flour.
2 In medium bowl, stir collectively flour, 1/2 cup brown sugar and the salt. With pastry blender or fork, reduce in butter till combination is crumbly. Put aside.
3 In one other medium bowl, gently stir collectively Apple Combination substances; put aside.
4 In massive bowl, beat Cake substances with electrical mixer on low pace 30 seconds, then on medium pace 2 minutes, scraping bowl often. Pour into pan.
5 Unfold apple combination evenly over cake batter. Sprinkle Topping evenly over prime.
6 Bake 30 to 35 minutes or till toothpick inserted in middle comes out clear. Cool utterly, about half-hour.