Yield: 16 bars

Ingredients

For the filling: 

  • 5-6 plums (about 1 lb.), sliced
  • 1½ tbsp. sugar
  • 2½ tsp. cornstarch
  • 1 tsp. lemon juice

For the dough: 

  • 1½ cups all-purpose flour
  • 1 cup old-fashioned oats
  • 1/3 cup sugar
  • 1/3 cup brown sugar, lightly packed
  • ¾ tsp. baking powder
  • ½ tsp. salt
  • ¼ tsp. ground cinnamon
  • ¼ tsp. ground ginger
  • 12 tbsp. cold unsalted butter, cut into small pieces
  • 1 large egg yolk
  • 1 tsp. vanilla extract
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  • step 1: HideShow Images

    Preheat the oven to 375˚ F.  Line an 8 x 8-inch baking pan with foil or parchment paper.  To make the filling, combine the plums, sugar, cornstarch and lemon juice in a medium bowl. Mix gently until well combined.

  • step 2: HideShow Images

    To make the dough, combine the flour, oats, sugars, baking powder, salt, cinnamon and ginger in a medium mixing bowl and stir to blend.  Add in the butter pieces and cut into the dry ingredients using a pastry cutter or two knives until the mixture resembles coarse meal.  Add in the egg yolk and vanilla and stir with a fork or knead very briefly just until a crumbly dough comes together.

  • step 3: HideShow Images

    Transfer about two thirds of the dough mixture to the prepared baking pan and press down into an even layer.  Bake until light golden, about 10 minutes.

  • step 4: HideShow Images

    Once the base layer is baked, spread the plum mixture over the top in an even layer. Crumble the remaining dough over the top of the plum layer. Bake about 25 minutes or until the top is golden brown. Transfer the pan to a wire rack to cool. Let cool completely before slicing and serving.