This recipe is based on one from the Cooking with Shelburne Farms cookbook by Melissa Pasanen and Rick Gencarelli. I've substituted strawberries for blackberries to match the share contents, but this basic recipe really works well with so many fruits.
1 cup packed light brown sugar
3/4 cup packed dark brown sugar or maple sugar
1 1/4 cup whole-wheat pastry flour
2 tsp ground cinnamon
1/4 tsp ground nutmeg
1/4 tsp table salt
3/4 cup (1 1/2 sticks) unsalted butter, cold, cut into 1/4 cubes
1/2 cup rolled oats (not instant)
3 pounds apples, peeled cored, and thinly sliced
3 cups frozen, unthawed strawberries
1/3 cup loosely packed cup light brown sugar or maple sugar
2 TB all-purpose flour
1 tsp ground cinnamon
Preheat oven to 350F. Using a food processor, pulse the light and dark brown (or maple) sugars, flour, cinnamon, nutmeg and salt together to combine. Add the butter and oatmeal and pulse just until the topping is gravelly with pieces of oatmeal still visible. Set aside.
In a buttered 9x13-inch baking pan or other shallow 3.5 - 4 quart baking dish, toss together the apples, strawberries, sugar, flour and cinnamon. Cover generously with topping, using your hands to squeeze together handfuls and pat them into place. Bake for 45-50 minutes until the topping is dark golden brown and the apples are soft.