Blueberry Walnut Crumble

Blueberry Walnut Crumble

This delicious Blueberry Walnut Crumble is made with sweet blueberries and topped with a crumbly, streusel topping- it’s the perfect holiday dessert!

Course Dessert
Cuisine American
Prep Time 15 minutes
Cook Time 45 minutes
Total Time 1 hour
Servings 9
Calories 236 kcal
Author The Foodie Physician


Blueberry Filling:

  • 6 cups (36 oz) fresh or frozen blueberries
  • 2 tablespoons lemon juice
  • 2 teaspoons lemon zest
  • 2 tablespoons cornstarch
  • 1/3 cup coconut sugar or light brown sugar
  • 1 teaspoon vanilla extract

Crumble Topping:

  • ¾ cup flour (I used white whole wheat)
  • cup coconut sugar or light brown sugar
  • ½ teaspoon cinnamon
  • 5 tablespoons cold unsalted butter or coconut oil, cut into small pieces
  • ½ cup rolled oats
  • ¼ cup chopped walnuts

Optional: Ice cream, whipped cream, or Greek yogurt, for serving

US Customary - Metric


  1. Preheat oven to 350°F. Spray an 8x8-inch square baking dish with cooking spray.
  2. To make the blueberry filling, mix the blueberries, lemon juice, zest, cornstarch, sugar, and vanilla together in a large bowl.
  3. To make the crumble topping, mix the flour, sugar, and cinnamon together in another large bowl. Cut in the butter with a fork until it’s the size of peas. Stir in the oats and walnuts.
  4. Pour the blueberry filling into the prepared baking dish and sprinkle the crumble mixture on top, spreading it out evenly. Bake in the oven until blueberries are cooked and bubbling, about 45 minutes. Let cool 15 minutes before serving. Serve alone or with a dollop of ice cream or whipped cream.

Recipe Notes

Makes 8-10 servings

Nutrition Facts
Blueberry Walnut Crumble
Amount Per Serving
Calories 236 Calories from Fat 81
% Daily Value*
Fat 9g14%
Saturated Fat 4g25%
Cholesterol 16mg5%
Sodium 80mg3%
Potassium 117mg3%
Carbohydrates 38g13%
Fiber 3g13%
Sugar 17g19%
Protein 2g4%
Vitamin A 250IU5%
Vitamin C 11.5mg14%
Calcium 15mg2%
Iron 1mg6%
* Percent Daily Values are based on a 2000 calorie diet.