Last Updated on August 7, 2026 by Rita
Custard Cream Mug Cakes are soft, fluffy microwave desserts with a creamy custard center that come together in just 5 minutes. If you’re looking for a quick single-serving dessert with a tender sponge, smooth custard filling, and a sweet strawberry topping, this recipe is exactly what you need. I love recipes like this because they transform simple pantry staples into a comforting homemade treat without turning on the oven. Ever since I started creating mug cakes in my sunny Oregon kitchen, I’ve enjoyed finding new ways to bring classic dessert flavors into one cozy mug. Every spoonful reminds me of my grandmother’s creamy custard desserts, proving that the simplest recipes often become the family favorites. These Custard Cream Mug Cakes are perfect for satisfying a dessert craving any day of the week.
If you enjoy creamy vanilla desserts, you’ll also love Vanilla Bean Mug Cake.
Table of Contents
Table of Contents
What Are Custard Cream Mug Cakes?
Custard Cream Mug Cakes are single-serving microwave desserts that combine a light, fluffy sponge with a warm, creamy custard center. Finished with a spoonful of warm strawberry jam and extra custard, they deliver the comforting flavors of a classic British-style pudding in just a few minutes. Everything cooks in one mug, making this recipe perfect when you want a homemade dessert without the time and effort of traditional baking.
What makes these Custard Cream Mug Cakes special is the surprise layer of thick custard hidden inside the batter. As the cake cooks, the sponge rises around the creamy filling, creating a soft texture with a rich, velvety center. The warm strawberry jam adds a fruity sweetness that perfectly balances the creamy custard, making every spoonful even more satisfying.
Whether you enjoy them after dinner, as an afternoon treat, or whenever you’re craving something warm and comforting, these mug cakes offer a quick and delicious dessert with very little preparation or cleanup.
If you love creamy microwave desserts, be sure to try Vanilla Coconut Cottage Cheese Mug Cake for another rich and satisfying single-serving recipe.
Key Ingredients for Making Custard Cream Mug Cakes
One of the reasons I keep coming back to Custard Cream Mug Cakes is that they use simple, everyday ingredients to create a warm dessert with a fluffy sponge and a creamy custard filling. Each ingredient has an important role in delivering the perfect texture and flavor.
Ingredients
- 40g (1/4 cup) self-raising flour
- Forms the base of the cake and creates a light, airy texture.
- 1/4 teaspoon baking powder
- Gives the sponge an extra lift, helping it rise beautifully in the microwave.
- 2 tablespoons caster sugar
- Sweetens the cake without overpowering the creamy custard.
- 2 tablespoons milk
- Adds moisture and helps create a smooth batter.
- 25g butter, melted and cooled
- Makes the cake rich, tender, and full of buttery flavor.
- 1 large egg
- Binds the ingredients together while giving the cake structure and softness.
- 1/4 teaspoon vanilla extract (optional)
- Enhances the custard flavor with a delicate vanilla aroma.
- 1 tablespoon strawberry jam
- Adds a fruity topping that pairs perfectly with the creamy custard.
- 60ml (1/4 cup) thick custard, plus extra for serving
- Creates the smooth, creamy center that makes these Custard Cream Mug Cakes so irresistible.
If you love creamy desserts with a vanilla flavor, you’ll also enjoy Microwave Mug Sponge Cake.
How to Make Custard Cream Mug Cakes
Making Custard Cream Mug Cakes is quick and simple. In just a few easy steps, you’ll have a warm dessert with a fluffy sponge, a creamy custard center, and a sweet strawberry topping.
Step 1 – Prepare the Dry Ingredients
Place the self-raising flour and baking powder in a small bowl. Stir them together with a fork until they are evenly combined. This helps the cake rise evenly while it cooks.
Step 2 – Make the Batter
In a separate small jug or bowl, whisk together the caster sugar, milk, melted butter, egg, and vanilla extract until smooth. Gradually pour the wet mixture into the flour mixture, whisking gently until a smooth batter forms. Avoid overmixing to keep the sponge light and tender.
Step 3 – Warm the Strawberry Jam
Place the strawberry jam in a small microwave-safe bowl and heat it on High for about 20 seconds, or until it becomes warm and easy to spoon. Set it aside while you cook the cake.
Step 4 – Layer the Cake
Pour two-thirds of the batter into a 375ml (1½-cup) microwave-safe mug. Spoon the thick custard over the batter, then carefully cover it with the remaining batter. This creates the creamy center that makes Custard Cream Mug Cakes so delicious.
Step 5 – Microwave and Serve
Microwave the mug on High for about 1½ minutes, or until the cake has risen and is cooked through. Spoon the warm strawberry jam over the top and serve immediately with extra thick custard for the ultimate comforting dessert.
If you enjoy warm desserts with a creamy center, don’t miss Microwave Mug Apple Crisp.
Essential Tools for Making This Recipe
One of the best things about Custard Cream Mug Cakes is that you only need a few basic kitchen tools to make this delicious dessert. With the right equipment, you’ll have a perfectly cooked mug cake with a soft sponge and creamy custard center in just minutes.
375ml (1½-Cup) Microwave-Safe Mug
A large microwave-safe mug is essential for this recipe. The cake rises as it cooks, so using a mug with enough space prevents the batter from overflowing and allows the sponge to cook evenly.
Mixing Bowl
Use a small mixing bowl to combine the self-raising flour and baking powder before adding the wet ingredients. Mixing them first helps distribute the baking powder evenly throughout the batter.
Small Jug or Bowl
A small jug or bowl works well for whisking together the caster sugar, milk, melted butter, egg, and vanilla extract. Combining the wet ingredients separately creates a smooth batter with fewer lumps.
Fork or Small Whisk
A fork or small whisk makes it easy to blend both the dry and wet ingredients until just combined. Gentle mixing helps keep the sponge light and fluffy.
Small Microwave-Safe Bowl
You’ll need a small bowl to warm the strawberry jam for about 20 seconds before spooning it over the finished cake. Warm jam spreads more easily and adds a glossy finish.
Spoon
A spoon is perfect for layering the thick custard between the batter and serving the finished mug cake with extra custard.
If you enjoy simple microwave desserts, you’ll also love Cake in a Mug Vanilla Easy for another quick homemade treat.
Expert Tips for the Best Texture
The secret to perfectly soft Custard Cream Mug Cakes is using the right mixing and layering technique. Although this recipe is quick to prepare, a few simple tips will help you achieve a light sponge with a smooth, creamy custard center every time.
Start by stirring the self-raising flour and baking powder together before adding the wet ingredients. This evenly distributes the baking powder, allowing the cake to rise consistently in the microwave.
When preparing the batter, whisk the caster sugar, milk, melted butter, egg, and vanilla extract until smooth before gradually mixing them into the flour. Stir only until the batter is combined. Overmixing can make the sponge heavier instead of light and fluffy.
For the signature creamy center, pour two-thirds of the batter into the mug first, then gently spoon the thick custard over it. Cover the custard with the remaining batter without stirring. Keeping the layers separate helps create a soft custard filling after cooking.
Cook the mug cake on High for about 1½ minutes, but remember that microwave power can vary. The cake should rise well and feel set on top while remaining soft inside. If necessary, add a few extra seconds, but avoid overcooking because it can dry out the sponge.
Warm the strawberry jam before serving so it spreads easily over the cake. Finish with an extra spoonful of thick custard while the cake is still warm for the richest flavor and creamiest texture.
If you enjoy soft, comforting microwave desserts, you’ll also love White Cake in a Mug.
Variations of Custard Cream Mug Cakes
One of the best things about Custard Cream Mug Cakes is how easy they are to adapt with different flavors and toppings while keeping the same soft sponge and creamy custard center.
For a chocolate version, add a handful of chocolate chips to the batter before layering the custard. As the cake cooks, the chocolate melts into the sponge, creating a rich dessert that pairs beautifully with the creamy filling.
If you enjoy fruity desserts, replace the strawberry jam with raspberry, blackberry, or apricot jam. Each option adds a different burst of sweetness while complementing the smooth custard center.
To create a richer vanilla flavor, increase the vanilla extract slightly or use vanilla bean paste. The deeper vanilla notes blend perfectly with the custard and make the cake even more aromatic.
For a little crunch, sprinkle chopped toasted almonds, pecans, or crushed vanilla cookies over the finished cake. The crisp topping contrasts nicely with the soft sponge and creamy filling.
If you’re serving this dessert for a special occasion, finish it with whipped cream, fresh strawberries, and an extra drizzle of warm custard. These simple additions turn Custard Cream Mug Cakes into an elegant dessert that’s still ready in just a few minutes.
If you love creamy vanilla desserts, be sure to try Vanilla Chai Mug Cake for another warm and comforting microwave treat.
Storage and Reheating Tips for Custard Cream Mug Cakes
Custard Cream Mug Cakes are at their best when enjoyed immediately after cooking. The warm sponge stays light and fluffy, while the thick custard center remains smooth and creamy. Adding the warm strawberry jam and extra custard just before serving gives the dessert its best flavor and texture.
If you have leftovers, let the mug cake cool completely before covering the mug or transferring it to an airtight container. Store it in the refrigerator for up to 2 days. Keep any extra custard and strawberry jam in separate containers so they stay fresh and don’t soak into the cake during storage.
To reheat, microwave the cake for 10 to 20 seconds, or until just warmed through. Heat the extra custard separately for a few seconds if needed, then spoon it over the cake before serving. If the sponge feels slightly dry after chilling, adding a little warm custard will help restore its soft texture.
Although the cake stores well for a short time, it’s so quick to prepare that making it fresh is usually the best option. A freshly cooked Custard Cream Mug Cake has the fluffiest sponge, the creamiest filling, and the most enjoyable flavor.
If you love freshly made microwave desserts, don’t miss 1-Minute Microwave Funfetti Mug Cake.
Frequently Asked Questions About Custard Cream Mug Cakes
Can I make Custard Cream Mug Cakes ahead of time?
Custard Cream Mug Cakes are best enjoyed fresh from the microwave. They have the softest sponge and the creamiest custard center when served immediately after cooking. If needed, you can refrigerate leftovers for up to 2 days and reheat them before serving.
Can I use a different jam?
Yes. While strawberry jam adds a classic fruity topping, you can also use raspberry, blackberry, apricot, or your favorite fruit jam. Warm the jam before spooning it over the cake for the best consistency.
Why is my custard center missing?
The custard may have mixed into the batter if the layers weren’t kept separate. For the best result, pour two-thirds of the batter into the mug, gently spoon the thick custard over it, and then cover it with the remaining batter without stirring.
What size mug should I use?
A 375ml (1½-cup) microwave-safe mug works best. It gives the batter enough room to rise during cooking and helps prevent the cake from overflowing.
Can I serve Custard Cream Mug Cakes with other toppings?
Absolutely! Although warm strawberry jam and extra custard are classic choices, you can also serve the cake with whipped cream, vanilla ice cream, fresh strawberries, or a light dusting of powdered sugar for extra flavor.
If you enjoy easy vanilla desserts, don’t miss Vanilla Bean Mug Cake.
Why You’ll Love This Custard Cream Mug Cakes
Once you try Custard Cream Mug Cakes, they’re likely to become one of your favorite microwave desserts. They combine a light, fluffy sponge with a smooth, creamy custard center, creating a comforting dessert that feels homemade without requiring much time or effort. From mixing the batter to serving the finished cake, everything comes together in about five minutes, making it perfect for busy days or last-minute dessert cravings.
I especially love how each spoonful offers two delicious textures. The soft vanilla cake surrounds a rich custard filling, while the warm strawberry jam adds a sweet, fruity finish that complements every bite. A generous spoonful of extra custard on top makes the dessert even more indulgent and satisfying.
Another reason to love this recipe is its simplicity. The ingredients are easy to find, the preparation is straightforward, and the microwave does all the work. Whether you’re making dessert for yourself or treating someone to a quick homemade sweet, this recipe delivers reliable results with very little cleanup.
If you’re looking for a warm, comforting dessert that’s rich, creamy, and ready in minutes, Custard Cream Mug Cakes are the perfect choice. It’s the kind of recipe you’ll find yourself returning to whenever you want a fast, delicious homemade treat.
If you enjoy classic microwave desserts, be sure to try Microwave Mug Sponge Cake for another soft and satisfying single-serving favorite.
Print
Microwave Custard Mug Cake – Easy 5-Minute Gooey Dessert
Custard Cream Mug Cakes are soft, fluffy microwave cakes with a creamy custard center and a sweet strawberry jam topping. Ready in just 5 minutes, this easy single-serving dessert is perfect when you need a quick homemade treat.
- Total Time: 5 minutes
- Yield: 1 serving 1x
Ingredients
Instructions
1. Place the self-raising flour and baking powder in a small bowl and stir together with a fork.
2. In a separate jug or bowl, whisk together the caster sugar, milk, melted butter, egg, and vanilla extract. Gradually whisk the wet mixture into the flour mixture until smooth.
3. Microwave the strawberry jam on High for about 20 seconds until warm, then set aside.
4. Pour two-thirds of the batter into a 375ml (1½-cup) microwave-safe mug. Spoon the thick custard over the batter, then cover with the remaining batter.
5. Microwave on High for 1½ minutes, or until the cake has risen and is cooked through.
6. Spoon the warm strawberry jam over the top and serve immediately with extra thick custard.
Notes
Use a 375ml (1½-cup) microwave-safe mug.
Microwave cooking times may vary depending on wattage.
Do not overmix the batter to keep the cake light and fluffy.
Serve immediately while warm for the best texture.
Extra thick custard makes the cake even creamier.
- Prep Time: 3 minutes
- Cook Time: 2 minutes
- Category: Vanilla & Spice Mug Cakes
- Method: Microwave
- Cuisine: Australian
Nutrition
- Serving Size: 1 mug cake
- Calories: 563
- Sugar: 37g
- Sodium: 492mg
- Fat: 28g
- Saturated Fat: 16g
- Unsaturated Fat: 10g
- Trans Fat: 0.5g
- Carbohydrates: 67g
- Fiber: 1g
- Protein: 13g
- Cholesterol: 255mg
Discover more cozy dessert recipes in minutes, comfort and sweetness await in every mug.
👉 Save your next craving on Pinterest boards and discover more no-bake dessert recipes you can make in just minutes.
👉 Join me on Facebook page and discover more quick dessert recipes made with love, your next 5-minute chocolate moment is waiting!
“If you tried this recipe, tell me how it turned out. Did you keep it gooey or cook it fully?”
