Preheat the oven to 350F and prepare a 2-3qt baking baking dish by spraying with cooking spray or greasing with butter. You can use a square 2qt dish, a 9x13 dish, or several ramekins/muffin tins. Fruit crisps are very easy to customize to what you have at home, so use whatever cooking vessel that works best for you. You can also use a cast iron pan!
In a medium bowl, combine all of the ingredients for the topping.
Using a fork, pastry cutter or your hands, break apart the chunks of butter and combine with the dry ingredients until the mixture is sandy.
When the mix is finished, put it in the refrigerator while you make the filling. You want the butter to be cold when you bake it.
In a separate bowl, combine all of the ingredients for the filling. Toss together until it is evenly combined. It's okay if someone of your berries break apart while you are mixing!
Pour your berries into your prepared baking dish. If you are using ramekins or a muffin tin, you want your berry mix to fill about 2/3 to 3/4 of the way up.
Remove your topping from the refrigerator and cover the berries with topping.
Bake in the oven for about 45-50 minutes, until the berries are bubbling and the top is golden brown all over. If you are using the ramekins or muffin tin, bake for about 25 minutes.
Broil on high for 1-2 minutes to really brown the topping and make it crunchy.
Serve topped with vanilla ice cream as dessert or over yogurt for breakfast!