Cookies will cook from heat left in oven, will spread slightly and will become crisp. Peel cookies from foil. Preheat oven to 350 degrees. Bring water to a boil in a heavy saucepan, add the tea bags and steep for 5 minutes. Remove and discard tea bags.
Place apples in baking dish.
In a bowl, blend together brown sugar and flour. Sprinkle mixture over apples and dot with butter. Pour the tea over the apples and brown sugar mixture. For the topping, combine flour, oatmeal, brown sugar and butter in a separate bowl and blend with a pastry mixer or by hand until uniformly smooth. Spread evenly over the top of the apples.