Sticky Toffee Pudding Prune Squares
 
Makes 12 to 24 bars
Ingredients
  • 9 ounces (255 grams) roughly chopped California Prunes (about 1¼ cups lightly packed)
  • ¾ cup (180 grams) boiling water
  • ¾ cup plus 1 tablespoon (184 grams) unsalted butter, softened
  • 1 cup (220 grams) firmly packed light brown sugar
  • 3 large eggs (150 grams), room temperature
  • 2 large egg yolks (37 grams), room temperature
  • 1 tablespoon (21 grams) molasses (not blackstrap)
  • ¾ teaspoon (3 grams) vanilla extract
  • 2 cups (250 grams) unbleached cake flour
  • 2 teaspoons (10 grams) baking powder
  • 1 teaspoon (5 grams) baking soda
  • 1 teaspoon (2.25 grams) kosher salt, divided
  • 1¼ cups (250 grams) granulated sugar
  • 6 large egg whites (180 grams), room temperature
  • ¼ teaspoon cream of tartar
  • Salted Toffee Sauce (recipe follows)
Instructions
  1. Preheat oven to 350°F (180°C). Spray a 13x9-inch baking pan with cooking spray. Line pan with parchment paper, letting excess extend over sides of pan.
  2. In a medium heatproof bowl, place prunes in an even layer; add ¾ cup (180 grams) boiling water (prunes should be just submerged), and let stand for 15 minutes.
  3. In the work bowl of a food processor, pulse prune mixture until mostly smooth. (It’s OK if some flecks of prune remain.)
  4. In the bowl of a stand mixer fitted with the paddle attachment, beat butter and brown sugar at medium speed until fluffy, 3 to 4 minutes, stopping to scrape sides of bowl. Add eggs and egg yolks, one at a time, beating until combined after each addition. Beat in molasses and vanilla. (Mixture may look slightly curdled at this point, but batter will come together.)
  5. In a medium bowl, whisk together flour, baking powder, baking soda, and ¾ teaspoon (2.25 grams) salt. With mixer on low speed, gradually add flour mixture to butter mixture in two additions alternately with prune mixture, beginning and ending with flour mixture, beating just until combined after each addition and stopping to scrape sides of bowl. (Do not overmix.) Spoon batter into prepared pan; using a small offset spatula, smooth into an even layer. Firmly tap pan on a kitchen towel-lined counter several times to release any air bubbles; using a wooden pick, pop and fill any that rise to surface.
  6. Bake until a wooden pick inserted in center comes out clean, 26 to 30 minutes. Let cool in pan for 10 minutes. Using excess parchment as handles, remove from pan, and let cool completely on a wire rack.
  7. In the heatproof bowl of a stand mixer, whisk together granulated sugar, egg whites, cream of tartar, and remaining ¼ teaspoon salt by hand. Place bowl over a saucepan of simmering water. Cook, stirring frequently, until an instant-read thermometer registers 160°F (71°C), 12 to 18 minutes.
  8. Return bowl to stand mixer. Using the whisk attachment, beat at medium-high speed until bowl is cool to the touch and glossy stiff peaks form, about 8 minutes. Spoon and spread meringue mixture onto cooled cake. Using a handheld kitchen torch, carefully toast meringue, if desired. Cut into bars. Serve with Salted Toffee Sauce.
Recipe by Bake from Scratch at https://www.bakefromscratch.com/sticky-toffee-pudding-prune-squares/