For the Fruit

1. Preheat oven to 350 degrees.
2. Wash and dry fresh fruit and add to a large bowl. Or if using frozen fruit, add the entire bag to a large bowl.
3. Sprinkle with sugar and cornstarch and toss till evenly coated.
4. In a 9 inch cast iron skillet, add in cubed butter to the bottom then pour in fruit mixture.

Brown Butter

1. In a medium-size saucepan (preferably a light bottom colored one), add 1 stick of butter over medium heat.
2. Cook butter until melted and leave alone to continue to cook and brown.
3. Let cook for around 5 minutes. It will start to bubble and you can whisk every so often. You want the butter to change to a caramel color. Brown bits will start to form on the bottom.
4. The butter is finished once the caramel color is reached and you can smell the nutty flavor from the brown bits in the bottom.
5. Remove from heat and let cool for 10 minutes.

Crumble Topping

1. In a large bowl combine brown butter, flour, oats, brown sugar, cinnamon, and salt. Stir with a wooden spoon until everything is well combined and mixed.
2. Sprinkle mixture over the fruit in the cast iron skillet in an even layer.
3. Place in preheated oven and cook for 20-25 minutes.
4. Remove from oven and let cool for 5 minutes. Serve and enjoy immediately!