Step 1

Preheat the oven to 375 degrees Fahrenheit.

Step 2

Core, peel and dice the apples into 1/2-inch chunks. Combine the apples with the lemon juice, cornstarch, granulated sugar, 1 1/2 teaspoons of the cinnamon, ginger, and allspice in a large bowl and toss until well coated. Pour into a round 9-inch pie pan, 9 x 9 inch baking dish or 7 x 11 baking dish.

Step 3

Make the topping: In a medium bowl, add the flour, brown sugar, the remaining 1/2 teaspoon cinnamon, baking powder and kosher salt. Mix together with a fork. Pour in the melted butter while mixing with the fork until a crumbly mixture forms. Use your fingers to sprinkle the crumbles evenly over the filling.

Step 4

Bake: Bake for 45 to 50 minutes until the top is evenly golden brown and the filling is bubbly. Cool for 1 hour, then serve. Store at room temperature covered for 1 day, refrigerated for 4 days, or frozen for up to 3 months. Reheat in a 350 degree oven until bubbly.