Preheat the oven to 350°F and PAM spray or butter a deep dish pie plate or 9" square pan.
Combine the filling ingredients, tossing to coat everything evenly and place in the pan.
Pulse the brown sugar and crumble butter in a food processor until a large coarse crumb forms.
Combine with the other topping ingredients and spread evenly over the filling.
Bake for 35 - 45 minutes until the bubbles start to appear around the edges and the topping is crisp and browned.