Name: Apple Slab Pie
Prep time: 15 min
Cook time: 40 min
Total time: 55 min
Yield: 16
Ingredients: 2 sheets (1 package) refrigerated puff pastry pie crust; 6 large or 8 medium apples (I used gala), peeled and very thinly sliced; 1 cup sugar; 1/4 cup brown sugar; 2 teaspoons cinnamon; 1/4 cup flour; 1/2 teaspoon ground nutmeg; 1/4 teaspoon salt; 1 teaspoon vanilla; 4 tablespoons cold butter, cut into cubes; 1/2 cup flour; 1/3 cup brown sugar; 1 teaspoon cinnamon; 1 cup powdered sugar; 1 tablespoon pure maple syrup (see note); 1/2 teaspoon maple extract (see note); 2-4 tablespoons milk, as needed