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.
In large bowl, stir cake mix, butter and egg until mixed. Press in bottom of pan. Sprinkle evenly with baking chips, dried fruit, coconut and cashews; lightly press topping. Pour milk evenly over top.
Bake 35 to 40 minutes or until edges and center are golden brown. Cool completely, about 2 hours. For bars, cut into 8 rows by 4 rows. Store covered.