Ingredients

• 4 cups peeled and sliced fresh peaches
• 1 cup fresh blackberries, or more to taste
• 1/2 cup gluten-free flour
• 1/4 cup white sugar
• 1 tablespoon lemon juice
• 1 teaspoon ground cinnamon
• 1 cup brown sugar
• 1 cup quick-cooking oats
• 3/4 cup gluten-free flour
• 3/4 cup butter

Instructions

1. Preheat oven to 350 degrees F (175 degrees C). Lightly grease a 9x13-inch baking dish.
2. Mix peaches, blackberries, 1/2 cup gluten-free flour, white sugar, lemon juice, and cinnamon together in a bowl; spread evenly into the prepared baking dish.
3. Stir brown sugar, oats, and 3/4 gluten-free flour together in a separate bowl. Cut butter into oat mixture until it resembles coarse crumbs; sprinkle evenly over berry mixture.
4. Bake in the preheated oven until golden brown, about 45 minutes.