So scrumptious! This is the most delicious peach and blueberry crumble! So fruity, buttery, lemony, and totally yummy especially when served warm with ice cream. Can be made with fresh or frozen fruits so it's an all-season dessert.
In a bowl mix together the brown sugar, lemon juice, lemon zest and almond extract. Set aside. Preheat the oven to 375 F.
Arrange the sliced peaches in a greased 9x9 or 8x11 baking dish. Distribute the blueberries all over the peaches. Sprinkle the sugar mixture all over the fruits. Use a pastry brush to spread it, if needed. Place inside the preheated oven as you make the topping.
Mix together the oatmeal, salt, baking powder, and sugar. Using 2 knives or a pastry blender, cut in the cold butter until mixture resembles coarse crumbs (or at least everything is mixed well and butter is distributed evenly).
Pour in the milk and egg then stir until the mixture is moistened. Take out the heated fruit from the oven and spread the crumble mixture all over. Sprinkle with the remaining sugar.
Bake in the preheated oven for 35 minutes or until nicely browned on top and bubbly. Serve warm with ice cream!