Go Back Email Link
+ servings
Print Recipe
5 from 3 votes

Blackberry Oat Crumble Bars

Only 8 ingredients and a little more than 30 minutes and you'll have these delicious blackberry oat crumble bars that everyone is sure to love!
Prep Time10 mins
Cook Time30 mins
Total Time40 mins
Course: Baking & Sweets, Bars
Cuisine: American
Keyword: blackberry bars, blackberry jam oatmeal bars, blackerry oat crumble bars
Servings: 16 bars
Calories: 172kcal
Author: NicholeL


  • 1 cup all purpose flour
  • ¾ cup old fashioned oats
  • cup granulated sugar
  • ¼ cup brown sugar
  • 8 tablespoon unsalted butter
  • 1 teaspoon vanilla extract
  • ¼ tsp salt
  • 10 oz blackberry preserves


  • Preheat the oven to 350. Line an 8x8 baking dish with parchment paper.
  • In one bowl combine flour, oats and salt. In a second bowl, melt butter and whisk in granulated sugar, brown sugar and vanilla. Combine wet and dry ingredients together.
  • Press ¾ of the crumble mixture into the prepared pan. Spread the blackberry preserves on top and then press the remaining ¼ of the crumble on top.
  • Bake for 30 minutes, then let cool completely. (Once slightly cooled, refrigerate for 1 hour to speed up cooling time)
  • Cut into 16 evenly sized bars.


  • Replace unsalted butter with salted and remove the ¼ teaspoon of salt. 
  • Replace blackberry preserves with any other fruit spread of choice. Or to use fresh berries, toss them with 1 tablespoon each cornstarch and sugar and layer on top the crumble. Baking time may need to increase by 5 minutes. 
  • Substitute half of the all purpose flour with wheat flour for a healthier take. 
  • Use gluten free flour and oats for a gluten free variety! 
  • Add in ¼ to ½ cup chopped nuts of your choice to the crumble (walnuts, almonds or pecans)


Serving: 1bar | Calories: 172kcal | Carbohydrates: 28g | Protein: 1g | Fat: 6g | Saturated Fat: 4g | Cholesterol: 15mg | Sodium: 44mg | Potassium: 40mg | Fiber: 1g | Sugar: 16g | Vitamin A: 175IU | Vitamin C: 2mg | Calcium: 11mg | Iron: 1mg