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Easy Rhubarb Custard Cake

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  • Author: clara
  • Prep Time: 10 minutes
  • Cook Time: 50 minutes
  • Total Time: 1 hour
  • Yield: 12 servings 1x
  • Category: Dessert
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Description

Easy Rhubarb Custard Cake is a moist and tangy dessert that combines tart rhubarb with a rich, creamy custard-like filling, all baked into a soft vanilla cake base. Perfect for spring and summer gatherings.


Ingredients

Units Scale
  • 1 box yellow cake mix (15.25 oz)
  • 4 cups chopped fresh rhubarb
  • 1 cup granulated sugar
  • 2 cups heavy cream
  • Butter or non-stick spray for greasing pan

Instructions

  1. Preheat oven to 350°F (175°C). Grease a 9×13-inch baking dish.
  2. Prepare the yellow cake mix according to package instructions and pour the batter into the prepared baking dish.
  3. Evenly sprinkle chopped rhubarb over the cake batter.
  4. Sprinkle sugar evenly over the rhubarb layer.
  5. Pour heavy cream over the top, covering the entire surface.
  6. Bake for 45-50 minutes, or until the top is golden and a toothpick inserted into the cake comes out clean (note: the custard layer will be soft).
  7. Let cool at room temperature, then chill in the refrigerator for at least 2 hours before serving for best texture.

Notes

  • Fresh rhubarb works best, but frozen can be used—thaw and drain well first.
  • This cake creates its own custard layer as it bakes—do not stir once assembled.
  • Serve chilled, optionally with whipped cream or vanilla ice cream.

Nutrition

  • Serving Size: 1 slice
  • Calories: 310
  • Sugar: 28g
  • Sodium: 270mg
  • Fat: 15g
  • Saturated Fat: 9g
  • Unsaturated Fat: 5g
  • Trans Fat: 0g
  • Carbohydrates: 42g
  • Fiber: 1g
  • Protein: 3g
  • Cholesterol: 55mg