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easy oatmeal prune squares on parchment paper

Easy California Prune Oatmeal Squares

These prune bars are filled with a delicious prune paste made from fresh California Prunes. They have a delicious oatmeal crumble and just the right amount of sweetness in each bite!
Course Dessert
Cuisine American
Keyword californiaprunes, plums, prunebars, prunes
Prep Time 10 minutes
Cook Time 35 minutes
cooling time 30 minutes
Total Time 1 hour 15 minutes
Servings 9 bars
Calories 387kcal


For the California Prune filling

  • 8 oz. California Prunes, pitted and dried
  • 1/4 cup fresh lemon juice
  • 1/4 cup brown sugar (or coconut sugar)
  • 1 tsp. vanilla extract
  • 1/2 tsp. ground cinnamon

For the oatmeal crumb topping

  • 1 1/2 cups quick cook oatmeal, dry
  • 1 1/2 cups All-Purpose flour
  • 1 cup brown sugar, packed (or coconut sugar)
  • 1 1/2 sticks butter, unsalted and softened (12 Tbsp.)
  • 1/2 tsp. baking soda
  • 1/2 tsp. salt


  • Preheat your oven to 350° F. Spray an 8x8 inch baking pan with nonstick baking spray. Set aside.
  • Remove butter from fridge to soften.
  • Make the prune filling: in a food processor, process 8 oz. of California Prunes (chop them into smaller pieces if needed) with ¼ cup lemon juice, cinnamon, brown sugar and vanilla extract. Process for 1-2 minutes or until prunes are blended well into a paste. 
  • Make the oatmeal crumb mixture next: In a medium sized bowl, combine the dry ingredients: oats, flour, sugar, baking soda and salt. 
  • With clean hands, mix softened butter into the dry ingredients until the mixture becomes crumbly. Press half of the oatmeal mixture down into the pan to crease the crust layer.
  • Evenly spread the prune mixture on top.
  • Then sprinkle the remaining crumb mixture on top and press lightly into the prune paste. 
  • Bake for 35 minutes or until the top is golden brown. Let cool completely and then cut into squares. 



Serving: 1bar | Calories: 387kcal | Carbohydrates: 57.7g | Protein: 4.5g