Preheat the oven to 350 degrees.
Place all fruit in an 8- or 9-inch baking dish or pie plate. Toss to mix them up a bit.*
Add all topping ingredients in the bowl of a mixer fitted with the paddle attachment. Blend until mixture resembles small peas. This can also be done by hand or with a pastry blender. Squeeze with your hands to create small clumps.
Arrange topping over fruit to cover.
Place baking dish on a cookie sheet and bake for about 45 minutes, or until bubbly and topping is golden brown.