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Moist Fresh Rhubarb Upside Down Cake

fresh rhubarb upside down cake - featured image

A moist and fragrant upside down cake featuring fresh rhubarb and a unique cardamom syrup, perfect for spring baking and gatherings.

Ingredients

Scale
  • 1 ½ cups fresh rhubarb, cut into 1-inch pieces
  • ½ cup granulated sugar (for caramelizing the rhubarb)
  • 2 tablespoons unsalted butter (for topping)
  • 1 teaspoon ground cardamom (freshly ground if possible)
  • ½ cup water (for cardamom syrup)
  • ½ cup granulated sugar (for cardamom syrup)
  • 1 teaspoon green cardamom pods, lightly crushed (or 1 ½ teaspoons ground cardamom)
  • 1 teaspoon lemon juice
  • 1 ½ cups all-purpose flour
  • 1 ½ teaspoons baking powder
  • ¼ teaspoon salt
  • ¾ cup granulated sugar
  • ½ cup unsalted butter, softened
  • 2 large eggs, room temperature
  • ½ cup whole milk (or dairy-free alternative like oat milk)
  • 1 teaspoon vanilla extract

Instructions

  1. Prepare the Rhubarb Topping: In a medium saucepan, melt 2 tablespoons of unsalted butter over medium heat. Add ½ cup sugar and ground cardamom, stirring until sugar dissolves and mixture bubbles gently, about 2-3 minutes. Add rhubarb pieces and cook 3-4 minutes until slightly softened but holding shape. Remove from heat and spread evenly in bottom of greased 9-inch cake pan.
  2. Make the Cardamom Syrup: In a small saucepan, combine ½ cup water, ½ cup sugar, crushed cardamom pods (or ground cardamom), and lemon juice. Bring to simmer over medium heat, stirring occasionally. Simmer gently for 5-6 minutes until slightly thickened. Remove from heat, strain out pods if used, and set aside to cool.
  3. Preheat oven to 350°F (175°C). Grease cake pan well with butter or non-stick spray.
  4. Make the Cake Batter: In a medium bowl, whisk together flour, baking powder, and salt. In a large bowl, cream softened butter and ¾ cup sugar with mixer on medium speed until light and fluffy, about 3-4 minutes. Beat in eggs one at a time, then stir in vanilla extract.
  5. Alternate adding dry ingredients and milk to butter mixture, starting and ending with dry ingredients. Mix on low speed just until combined; do not overmix.
  6. Assemble and Bake: Pour batter evenly over rhubarb topping in cake pan, smooth surface gently with spatula. Bake 40-45 minutes or until toothpick inserted in center comes out clean and edges pull slightly from pan.
  7. Cool and Invert: Let cake cool in pan about 10 minutes. Run knife around edges to loosen. Place serving plate over pan and carefully invert cake. Tap pan gently if needed. Rhubarb topping will be glistening and sticky from cardamom syrup.
  8. Serve: Drizzle cooled cardamom syrup over cake for extra moistness and spice. Slice and enjoy warm or at room temperature.

Notes

Cream butter and sugar properly to trap air for a tender crumb. Do not overmix batter to avoid dense cake. Cook rhubarb topping gently to keep stalks firm but soft. Let cake cool 10 minutes before inverting to prevent sticking. Drizzle cardamom syrup after baking for extra moisture and flavor. For gluten-free, use gluten-free flour blend with xanthan gum. For vegan, substitute butter with coconut oil, eggs with flax eggs, and milk with almond or oat milk.

Nutrition

Keywords: rhubarb upside down cake, cardamom syrup, spring dessert, moist cake, easy baking, rhubarb recipe, upside down cake