Preheat oven to 375 degrees.
In a large bowl, combine apples with maple syrup and cinnamon.
Stir until the apples are coated.
Place mixture into large shallow baking dish.
Make the topping by combining the oats, flour, almond meal, almonds, cinnamon, ginger and nutmeg.
Add the melted butter and stir until crumbly.
Spoon the topping over the apples until the whole dish is covered.
Top with thin slices of butter.
Bake in oven at 375 degrees for 50 minutes, when apples are bubbly and topping is brown.
Serve warm with vanilla ice cream.