4tablespoonscold unsalted buttercut into small chunks
1cup finely ground almond flour
1/4cup brown sugaroptional if fruit isn't sweet enough
1/4cupwalnutscoarsely chopped
1teaspoonbaking powder
1 teaspoonground cinnamon
1/2teaspoonground nutmeg
Instructions
Fruit Filling
Preheat the oven to 375°F. To make the fruit filling, combine the peaches, blueberries, maple syrup, lemon juice, cornstarch and salt in a medium bowl. Toss gently to coat, then transfer the filling to a large baking dish or deep pie plate.
Crumble Topping
To make the crumble topping, combine the cold butter, almond flour, brown sugar, walnuts, baking powder, cinnamon and nutmeg in a large bowl. Using your fingertips, work the butter into the dry ingredients until the mixture is crumbly. Sprinkle evenly over the fruit filling.
Bake for 40 to 50 minutes, or until the topping is golden brown and the filling is bubbling around the edges. Let cool for about 15 minutes before serving.
The sweetness of the fruit will vary throughout the season. Taste a slice of peach before baking and reduce or omit the brown sugar if the fruit is especially ripe.