This easy blueberry crumble with perfectly cooked blueberries topped with a buttery oat crumble is high on our list of favorites. There’s no fancy equipment needed and you only need about 10 minutes of prep time. Before adding sugar to the filling, taste your berries. If they are already sweet, you might want to hold back on how much sugar you add.
24 ounces (about 2 pints) fresh blueberries
2 to 4 tablespoons sugar, see notes
2 tablespoons all-purpose flour
1 tablespoon fresh lemon juice or use water
Pinch fine sea salt
3/4 cup (100 grams) all-purpose flour
3/4 cup (65 grams) old-fashioned rolled oats
1/2 cup (100 grams) sugar, try combining 1/4 cup brown sugar + 1/4 cup granulated sugar
1/2 cup (115 grams) butter, melted (1 stick) or substitute 1/2 cup melted coconut oil
1/8 teaspoon fine sea salt
Heat oven to 375 degrees Fahrenheit.
Add blueberries, lemon juice, 2 tablespoons of flour, sugar, and pinch of salt to a 9-inch pie dish (or use a 2-quart baking dish). Toss well until combined.
Combine flour, oats, sugar, and the salt in a medium bowl. Add the melted butter then stir until all the flour has been moistened by the butter and topping is crumbly.
Sprinkle over blueberry filling. (We like to use our hands to do this. As we sprinkle, we press the crumbles together to create larger clumps of topping.)
Bake 25 to 35 minutes until juices are thickened and the topping has turned light golden brown. Cool 10 minutes, and then serve.