Preheat an oven to 350 degrees.
Toss the fruit with syrup or sugar, arrowroot, ginger and orange juice. Transfer to an 8- or 9-inch baking dish or pie plate.
Add all topping ingredients in the bowl of a mixer fitted with the paddle attachment. This can also be done by hand with a pastry blender. Blend until the mixture is no longer dry and can hold together when a small amount is squeezed in your hand. Topping can also be made ahead and refrigerated for up to 3 days or frozen for up to 3 months.
Arrange topping over fruit to cover.
Place baking dish on a cookie sheet and bake for about 45-50 minutes or until bubbly and topping is golden brown.
*To double this, use 1/3 cup orange juice and bake in a 13 x 9 –inch baking dish for about an hour.