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Lawrence D. Smith

Naturally Green Pistachio Loaf Cake

A moist, buttery pistachio cake infused with fresh lemon zest and finished with a naturally pink fruit glaze. Perfect for tea time, entertaining, or an elegant homemade dessert.
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Prep Time 10 minutes
Cook Time 30 minutes
Total Time 40 minutes
Servings: 1 8-inch cake
Course: Dessert
Cuisine: American
Ingredients Equipment Method Notes

Ingredients
  

Cake
  • 100 g ½ cup fine granulated sugar
  • Zest of 2 lemons
  • ¼ teaspoon fine sea salt
  • 1 teaspoon pure vanilla extract
  • 113 g ½ cup / 8 tablespoons unsalted butter, at room temperature
  • 2 large eggs at room temperature
  • 50 g ⅓ cup all-purpose flour
  • 1 teaspoon baking powder
  • 100 g 1 cup pistachio flour, or 100 g unsalted pistachios ground finely in a food processor
Glaze
  • 130 g 1 cup organic powdered sugar made with tapioca starch, sifted
  • ½ cup pomegranate arils or thawed frozen raspberries plus more for garnish
  • Pinch of fine sea salt
  • Pistachios pomegranate seeds, or dried rose petals, for garnish

Equipment

  • 8-inch-long loaf pan or 8 × 8-inch square baking pan
  • Parchment paper
  • Mixing bowl
  • Hand mixer
  • Spatula
  • Food processor, if grinding whole pistachios
  • Fine-mesh sieve
  • Cake tester
  • Measuring cups and spoons

Method
 

  1. Prepare the Pan and Oven: Preheat the oven to 350°F (175°C). Grease a loaf pan or an 8 × 8-inch square pan with butter and flour, or coat it with baking spray. Line the prepared pan with parchment paper.
  2. Grind the Pistachios: If using whole pistachios instead of pistachio flour, place them in a food processor along with the all-purpose flour and process until finely ground. Adding the flour helps prevent the pistachios from clumping.
  3. Cream the Butter Mixture: Combine the sugar, room-temperature butter, lemon zest, vanilla extract, and sea salt in a bowl. Beat with a hand mixer for 3–5 minutes, until the mixture becomes very light and fluffy.
  4. Add the Eggs: With the mixer running, add the eggs one at a time, beating until each egg is incorporated before continuing.
  5. Combine the Dry Ingredients: Add the finely ground pistachios, all-purpose flour, and baking powder to the butter mixture.
  6. Fold the Batter: Use a spatula to gently fold the pistachio, flour, and baking powder mixture into the wet ingredients until the batter is evenly combined.
  7. Fill the Pan: Transfer the batter to the prepared pan and spread it into an even layer.
  8. Bake the Cake: Bake until a cake tester inserted into the cake comes out clean. In a loaf pan, bake for approximately 30–35 minutes; in an 8 × 8-inch square pan, bake for approximately 20–25 minutes. The finished cake should rise slightly and form a flat, even layer.
  9. Cool and Slice: Allow the cake to cool completely. For a square pan, cut the cake straight down the middle to create two layers. For a loaf pan, slice it horizontally into two layers. Trim the edges if desired.
  10. Prepare the Fruit Juice: For the glaze, press the pomegranate arils or thawed raspberries through a fine-mesh sieve to release their juice.
  11. Make the Glaze: Add the sifted powdered sugar and a pinch of sea salt to the released fruit juice. Mix until combined and smooth.
  12. Glaze the First Layer: Place the first cake layer with the top facing upward. Spread an even layer of glaze over the surface.
  13. Assemble the Cake: Place the second cake layer on top with its top side facing downward, then spread the glaze over the upper surface.
  14. Garnish and Finish: Sprinkle the glazed cake with pistachios, pomegranate seeds, and/or dried rose petals as desired.

Notes

  • Pistachio flour: Use finely ground pistachios for the best texture and an even pistachio flavor throughout the cake.
  • Grinding whole pistachios: If making pistachio flour at home, process the pistachios together with the all-purpose flour to help prevent the nuts from becoming clumpy.
  • Room-temperature ingredients: Bring the butter and eggs to room temperature before mixing so the butter mixture can become properly light and fluffy.
  • Creaming time: Beat the butter, sugar, lemon zest, vanilla, and salt for the full 3–5 minutes specified in the recipe. This helps create the cake's tender texture.
  • Egg addition: Add the eggs individually while the mixer is running, allowing each one to combine before adding the next.
  • Choose your pan: A loaf pan produces a longer cake, while an 8 × 8-inch square pan creates a flatter cake and requires less baking time.
  • Check for doneness: Use a cake tester rather than relying only on the baking time. It should come out clean when the cake is ready.
  • Cool completely: Let the cake cool before slicing and glazing so the layers remain easier to handle.
  • Glaze options: Pomegranate arils provide the glaze with a naturally pink color, while thawed frozen raspberries can be used instead.
  • Optional layering: The cake does not have to be sliced and glazed twice. It can also be enjoyed as a single glazed cake.
  • Garnishing: Pistachios, pomegranate seeds, and dried rose petals all complement the cake's color and flavors.