I cook my apple fie filling on the stove if I'm not sure about my apples for pie. Just use the regular recipe and add 1/2 cup of water. Bring to boil and then simmer 15-20 minutes. Thicken with cornstarch slurry (2 tablespoons in 1/4 cup water) and then let cool a bit while you make and roll out your pastry. Never disappointed again!