Easy Castella Cake Recipe | Fluffy Japanese Sponge Cake
Make Castella cake with this easy recipe. A soft, fluffy Japanese sponge cake with delicate sweetness and moist texture—perfect for dessert, tea time, or gifting.
Prep Time 20 minutes mins
Cook Time 1 hour hr
Total Time 1 hour hr
Course Dessert, Tea-time snack
Cuisine Japanese wagashi, Portuguese-inspired sponge cake
Servings 10 slices
Calories 180 kcal
Rectangular loaf pan
Mixing bowls
Electric mixer
Whisk
Parchment paper
Cooling rack
Base Ingredients
- 1 cup bread flour
- 1 cup sugar
- 4 large eggs
- 3 tbsp honey or mizuame syrup
Optional Additions
- 2 tbsp matcha powder (for earthy flavor)
- 2 tbsp cocoa powder (for chocolate variation)
- ½ cup cream cheese (for savory twist)
- 2 tbsp zarame sugar (for crunchy base)
- Ingredient Tip: Bread flour provides structure, while honey adds moisture and depth.
Prepare Pan – Line loaf pan with parchment paper.
Whip Eggs & Sugar – Beat eggs and sugar until pale and fluffy.
Add Honey & Flour – Warm honey slightly, fold into egg mixture, then sift and fold in flour gently.
Pour Batter – Transfer to pan, tap lightly to release air bubbles. Sprinkle zarame sugar if desired.
Bake – Bake at 160°C (320°F) for 50–60 minutes until golden.
Cool & Rest – Cool in pan for 10 minutes, transfer to rack, wrap in plastic, and rest overnight.
Slice & Serve – Cut into neat slices and enjoy with tea or coffee.
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Make-Ahead: Best enjoyed after resting overnight.
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Variations: Try matcha, chocolate, or cheese for unique flavors.
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Serving Idea: Present in decorative boxes for gifting.
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Storage: Keeps 3–4 days at room temp, up to a week refrigerated, or 2 months frozen.
Keyword Castella cake recipe, honey sponge loaf, Japanese sponge cake, moist sponge cake, Nagasaki kasutera, wagashi dessert