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Warm slice of Authentic Irish Apple Cake with Custard Sauce drizzled on top.

Authentic Irish Apple Cake with Custard Sauce

This classic Irish dessert features a tender, crumb-topped cake studded with tart apples and warmly spiced with cinnamon and nutmeg. It's served with a rich, velvety homemade custard sauce for a profoundly comforting and soul-nourishing treat.
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Prep Time 30 minutes
Cook Time 55 minutes
Total Time 1 hour 25 minutes
Servings: 8
Course: Dessert
Cuisine: Irish
Calories: 450
Ingredients Equipment Method Notes

Ingredients
  

  • For the Apple Cake:
  • 2 cups all-purpose flour
  • 2 teaspoons baking powder
  • 1/2 teaspoon salt
  • 1 teaspoon ground cinnamon
  • 1/4 teaspoon freshly grated nutmeg
  • 3/4 cup granulated sugar
  • 1 large egg
  • 1/4 cup milk
  • 3 large tart baking apples e.g., Bramley or Granny Smith
  • For the Crumb Topping:
  • 2 tablespoons all-purpose flour
  • 1 tablespoon granulated sugar
  • 1 tablespoon cold unsalted butter
  • For the Custard Sauce:
  • 1 cup heavy double
  • 1 cup whole milk
  • 1 teaspoon vanilla extract or seeds from 1 vanilla pod
  • 4 large egg yolks
  • 1/4 cup granulated sugar
  • Pinch of salt

Equipment

  • 9-inch springform or deep cake pan
  • Mixing bowls
  • Whisk
  • Measuring cups and spoons
  • Fork
  • Small jug or bowl
  • Pastry brush (for greasing)
  • Skewer or toothpick (for testing)
  • Medium saucepan
  • Wooden spoon or spatula
  • Fine-mesh strainer
  • Jug or pitcher (for custard)

Method
 

  1. Preheat oven to 350°F (175°C). Grease a 9-inch springform or deep cake pan.
  2. Make the cake base: In a large bowl, whisk together 2 cups flour, baking powder, salt, cinnamon, and nutmeg.
  3. Add the 1/2 cup cubed cold butter. Using your fingertips, rub the butter into the flour until the mixture resembles coarse breadcrumbs with a few pea-sized lumps.
  4. Stir in the 3/4 cup sugar.
  5. In a small jug, beat the egg with the milk. Make a well in the centre of the flour mixture and pour in the wet ingredients. Using a fork, stir gently until a soft, shaggy dough just begins to form.
  6. Turn dough onto a lightly floured surface. Knead gently 2-3 times to form a cohesive ball. Pat or roll it into a rough circle about 1/2 inch thick.
  7. Transfer the dough circle to the prepared pan. Scatter the chopped apples evenly over the top, pressing them in lightly.
  8. Make the crumb topping: In a small bowl, rub together 2 tbsp flour, 1 tbsp sugar, and 1 tbsp cold butter until crumbly. Sprinkle this evenly over the apples.
  9. Bake for 45-55 minutes, or until the top is deep golden brown and a skewer inserted into the cake (not an apple) comes out clean.
  10. Let the cake cool in its pan for at least 20 minutes before releasing. Serve warm.
  11. While the cake cools, make the custard: In a medium saucepan, gently heat the cream, milk, and vanilla until it just begins to steam. Do not boil.
  12. In a separate bowl, whisk the egg yolks, 1/4 cup sugar, and a pinch of salt until pale and slightly thickened.
  13. Very slowly, drizzle a ladleful of the hot cream mixture into the egg yolks, whisking constantly to temper them.
  14. Pour the tempered egg mixture back into the saucepan with the remaining cream. Cook over low heat, stirring constantly, until the custard thickens enough to coat the back of a spoon.
  15. Immediately strain the custard through a fine-mesh strainer into a jug. Serve warm, at room temperature, or chilled with the apple cake.

Notes

For best texture, keep all butter and ingredients for the cake cold and avoid overworking the dough. Use tart baking apples like Bramley or Granny Smith for the best flavor and texture. Cook the custard sauce low and slow, stirring constantly; if it begins to curdle, remove from heat and whisk vigorously, then strain. The cake keeps covered at room temperature for 2 days. Custard must be refrigerated and used within 3 days; reheat gently over simmering water. Variations: Add raisins or sultanas to the apples, mix nuts into the topping, or add citrus zest to the dough. Serve with whipped cream or vanilla ice cream for extra indulgence.