1. In a medium mixing bowl, combine 1 1/4 cups flour and 1/4 teaspoon salt. Cut in 1/2 cup cold butter until pea-sized pieces form.
2. Add 5-6 tablespoons ice water, one tablespoon at a time, until dough forms. Wrap in plastic and chill for 30 minutes.
3. Preheat oven to 375°F. Roll dough to 1/4-inch thickness and cut with a 3 1/2-inch round cutter. Place in muffin tins and chill.
4. Par-bake crusts for 10 minutes. Set aside.
5. For filling, combine apples, lemon juice, and sugar. Let sit for 30 minutes.
6. Mix flour, spices, and salt. Add to apples and heat for 5-10 minutes until thickened.
7. For topping, combine brown sugar, oats, flour, and salt. Rub in butter until crumbly.
8. Assemble pies by adding 1 tablespoon filling to each crust, then topping with crumble.
9. Bake for 20-25 minutes until golden and bubbling. Cool before serving.