Apple and Oatmeal Crisp

1 1/2 cups water
1 1/2 cups (packed) light brown sugar
1/2 stick butter, melted
2 tablespoons plus 1 1/2 cups flour
1/2 teaspoon salt
1 1/4 teaspoons cinnamon
3/4 teaspoon nutmeg
2 1/2 pounds cooking apples, cored and cut into wedges
1 1/2 cups oatmeal
1 stick butter, cut into small pieces and at room temperature
12 (1 cup) plastic containers with a lids

Preheat the oven to 350 degrees F. In a mixing bowl, combine the water, 3/4 cup brown sugar, melted butter, 2 tablespoons of the flour, salt, 1 teaspoon of cinnamon, and 1/2 teaspoon of grated nutmeg, whisk until smooth. Place the apples in a 9 by 2-inch glass baking dish (10 cup) and pour the liquid sugar mixture over the apples. Mix well. In a mixing bowl, combine the remaining 3/4 cup brown sugar, remaining 1/4 teaspoon cinnamon, remaining 1/4 teaspoon nutmeg, 1 1/2 cups flour, oatmeal, and butter. Using your fingers, work the mixture together until it resembles a coarse crumb-like mixture. Sprinkle the oatmeal topping over the top of the apple mixture. Bake for 1 hour, or until the apples are tender and the crust is golden. Remove from the oven and cool completely.