This Apple Blueberry Crumble features juicy berries and sweet apples under a layer of crunchy oat crumble. Flavored with warming cinnamon and vanilla, it's an easy, wholesome dessert to serve to a crowd. Gluten-free, nut-free, vegan, refined sugar-free.
Preheat the oven to 350°F. Lightly grease an 9x9-inch baking dish with cooking spray.
In a large bowl, combine the apples, blueberries, lemon juice, arrowroot starch, cinnamon, salt, maple syrup, and 1 teaspoon vanilla extract. Transfer the mixture to the prepared baking dish.
For the topping, place two cups of oats into the bowl of a food processor. Process on high until you have a fine flour consistency. Transfer the oat flour to a second large mixing bowl.
Add the coconut sugar, cinnamon, and salt to the oat flour. Pour melted butter and a ½ teaspoon vanilla extract into the flour mixture and stir to combine. Fold in remaining ½ cup of oats.
Scatter topping evenly over prepared fruit. I like to press some of the topping into little pieces. Bake for 35 to 40 minutes, or until the fruit is bubbling and topping has started to brown.
Serve warm with vanilla ice cream or dairy-free whipped cream.
Notes
Storage: Cover the dish of leftover crumble and store in the refrigerator for up to 5 days.Freezing: Transfer the baked, cooled crumble to an airtight container and freeze for up to 3 months. Thaw overnight in the fridge before reheating.Reheating: Heat the crumble in an oven preheated to 350°F for 10-20 minutes, until warmed through. You can cover the top with a loosely tented piece of aluminum foil, if needed, to prevent the topping burning.