This Irish apple cake recipe is the kind of cozy dessert that instantly makes the kitchen feel warm and inviting. With tender spiced apples tucked into a soft buttery cake and finished with a crumbly oat streusel, it’s perfect for fall gatherings, afternoon tea, or a comforting homemade dessert any time of year.
Every slice has a beautiful mix of textures, from the soft cake crumb to the juicy apple layers and crisp golden topping. Served with silky homemade custard sauce, it feels rich, comforting, and wonderfully old-fashioned in the best way.
Table of Contents
Why You’ll Love This Recipe
This recipe is perfect for special occasions and casual family desserts alike. It looks elegant enough for guests but uses simple pantry ingredients that are easy to work with.
It is also a wonderful make-ahead dessert since the cake keeps beautifully and the chilled custard can be prepared in advance. The flavors deepen as it rests, making it even more delicious the next day.
Kitchen Tools You’ll Need
- 9-inch springform pan: For easy release and clean slices
- Mixing bowls: For batter, streusel, and custard
- Hand or stand mixer: For creaming butter and sugar
- Whisk: For the custard sauce
- Silicone spatula or spoon: For folding the batter
- Sieve: For smooth custard and flour sifting
- Measuring cups and spoons: For accuracy
- Oven: For baking
Ingredients in This Recipe
- Unsalted butter: 1/2 cup, room temperature
- Granulated sugar: 1/2 cup
- Large eggs: 2
- Whole milk or cream: 3 tablespoons
- All-purpose flour: 1 1/4 cups
- Baking powder: 1 teaspoon
- Cinnamon: 1 teaspoon
- Salt: 1/8 teaspoon
- Granny Smith apples: about 3, peeled and thinly sliced
- Confectioner’s sugar: for dusting
Streusel Topping
- All-purpose flour: 3/4 cup
- old-fashioned rolled oats: 1/4 cup
- Cold unsalted butter: 6 tablespoons
- Granulated sugar: 1/2 cup
Custard Sauce
- Egg yolks: 6 large
- Granulated sugar: 6 tablespoons
- Whole milk: 1 1/2 cups
- Vanilla: 1 1/2 teaspoons
Spotlight on Key Ingredients
1. Granny Smith Apples
Texture: Bake up tender while still holding their shape beautifully.
Flavor: Bright, tart, and perfect against the sweet cake and custard.
2. Rolled Oats
Texture: Give the streusel its signature crumbly crunch.
Flavor: Mildly nutty and warm.
3. Custard Sauce
Texture: Smooth, silky, and pourable.
Flavor: Rich, creamy, and lightly vanilla-scented.
Ingredient Substitutions for Different Needs
- No Granny Smith Apples: Use Honeycrisp or Braeburn apples.
- No Whole Milk: Use half and half or cream.
- No Oats: Use extra flour in the streusel.
- Extra Spice: Add nutmeg or allspice.
- Richer Cake: Use cream instead of milk.

Irish Apple Cake Recipe
Equipment
- 9-inch springform pan
- Mixing bowls
- Hand or stand mixer
- Whisk
- Silicone spatula or spoon
- Sieve
- Measuring cups and spoons
- Oven
Ingredients
- 1/2 cup unsalted butter at room temperature
- 1/2 cup granulated sugar
- 2 large eggs
- 3 Tbsp whole milk or cream
- 1 1/4 cups all purpose flour
- 1 tsp baking powder
- 1 tsp cinnamon
- 1/8 tsp salt
- about 3 Granny Smith apples peeled and thinly sliced. Mine weighed a little over a pound after slicing.
- confectioner’s sugar for dusting
Streusel Topping
- 3/4 cup all purpose flour
- 1/4 cup old fashioned rolled oats
- 6 Tbsp unsalted cold butter cut in small pieces
- 1/2 cup granulated sugar
Custard Sauce
- 6 large egg yolks
- 6 Tbsp granulated sugar
- 1 1/2 cups whole milk ~ you can also use half and half or cream
- 1 1/2 tsp vanilla
Instructions
- Preheat oven to 350°F (175°C) and grease a 9-inch springform pan.
- Prepare the custard sauce: Simmer milk, whisk egg yolks with sugar, gradually combine, and cook until thickened. Strain, add vanilla, and chill.

- Make streusel topping: Mix butter, flour, sugar, and oats until crumbly, then refrigerate.

- Cream butter and sugar, then beat in eggs one at a time.

- Whisk together flour, baking powder, cinnamon, and salt; fold into the batter with milk or cream.

- Spread batter in the prepared pan, layer with sliced apples, and sprinkle with streusel.

- Bake for 50–60 minutes, until golden and set.

- Cool slightly, dust with confectioner’s sugar, and serve with chilled custard sauce.

Nutrition Facts
| Nutrition | Value |
|---|---|
| Calories | 372 kcal |
| Carbohydrates | 49g |
| Fibre | 3g |
| Fat | 17g |
| Protein | 5g |
| Sugar | 27g |
Common Mistakes to Avoid
- Dense Cake: Do not overmix the batter after adding flour.
- Soggy Apples: Slice the apples thinly and evenly.
- Burnt Streusel: Check the cake near the 50-minute mark.
- Runny Custard: Cook until it lightly coats the back of a spoon.
- Cake Sticking: Grease the springform pan well.
- Collapsed Center: Let the cake cool slightly before slicing.
Cooking Tips and Tricks
- Use Tart Apples: They balance the sweetness beautifully.
- Keep Streusel Cold: This helps it bake up crumbly and crisp.
- Cool Before Dusting: Powdered sugar looks best on a slightly cooled cake.
- Chill Custard: The contrast with warm cake is delicious.
- Slice Evenly: Thin apple slices bake more consistently.
Delicious Variations You Should Not Miss
This cake is easy to customize for different seasons and occasions.
- Extra Cinnamon Style: Add cinnamon to the streusel too.
- Nutty Twist: Add chopped walnuts or pecans.
- Caramel Drizzle: Serve with warm caramel sauce.
- Berry Apple Cake: Add raspberries or blackberries.
- Vanilla Glaze Version: Drizzle a light glaze on top.
- Pear Variation: Replace half the apples with pears.
- Holiday Spice Version: Add nutmeg and cloves.
- Mini Cake Style: Bake in individual ramekins.
Try Other Apple Recipes
- Spiced Apple Cider
- Apple Crumble
- Cranberry Apple Galette
- Fall Crockpot Apple Cider Pork
- Apple Cinnamon Roll Casserole
Best Make-Ahead and Storage Tips
- Make Ahead: Bake the cake a day ahead for deeper flavor.
- Fridge Storage: Store for up to 4 days.
- Custard Storage: Keep chilled separately in a covered container.
- Reheat Tip: Warm slices gently before serving.
- Best Texture: Dust with sugar just before serving.
Frequently Asked Questions
- Can I serve this without custard?
Yes, it is delicious on its own as well. - What apples work best?
Granny Smith, Honeycrisp, and Braeburn work beautifully. - Is this best served warm or cold?
Warm cake with chilled custard is especially lovely. - Can I make it ahead for guests?
Yes, it’s a perfect make-ahead dessert. - Does it taste very sweet?
No, the tart apples keep it beautifully balanced. - Can I freeze it?
Yes, freeze the cake slices without the custard. - What makes it Irish-style?
The classic apple cake with custard sauce is a traditional Irish-inspired dessert. - Can I use store-bought custard?
Yes, if you need a quicker option.




