Preheat oven to 375 degrees F. Mix apple slices with spices and maple syrup, and arrange in greased 8" square pan.
Dust with cornstarch. Mix butter, flour, sugar and almond flavouring until mixture resembles coarse bread crumbs.
Spread topping over apples, bake until topping is nicely browned, about 25-30 minutes. Cool slightly, sprinkle with icing
sugar and serve with ice cream or whipped cream.