The applesauce in this recipe helps to keep these cookie bars moist, so don't worry about the outer edges drying out! After 25 minutes of baking, check the center with a toothpick or knife and if done, it will come out clean. If you want to be super technical, and perhaps aiming for a "just underdone" texture, you can check the center with an instant read digital thermometer, aiming for it to reach 165 degrees Fahrenheit.