Easy Matcha Mug Cake (Single Serving)

A matcha mug cake is one of the fastest desserts you can make from scratch. The entire process, measuring, mixing, and cooking, takes about three minutes. The result is a warm, soft, slightly dense single-serve cake with a distinctive green colour and the subtle earthy sweetness of matcha. It is perfect for those moments when you want something sweet and home-made without committing to a full batch of baking.

Easy Matcha Mug Cake (Single Serving)

What makes a good mug cake

Mug cakes have a reputation for being rubbery or dry, and this reputation is partly deserved when recipes are poorly calibrated. The two most common mistakes are using too much flour and overcooking. A good mug cake uses a carefully balanced ratio of wet to dry ingredients and is cooked for the minimum time needed to set the structure without drying it out. The microwave continues to cook the cake for a moment after you stop it, so removing it while the very centre looks just slightly underdone usually produces the best result.

Ingredients

      4 tablespoons plain flour

      1 teaspoon matcha powder

      3 tablespoons sugar

      A small pinch of salt

      A quarter teaspoon of baking powder

      3 tablespoons milk

      2 tablespoons vegetable oil or melted butter

      Half a teaspoon of vanilla extract

Method

Add all the dry ingredients to a microwave-safe mug that holds at least 300 ml and mix them together with a fork. Make a small well in the centre and add the milk, oil, and vanilla. Mix everything together until just combined. Do not overmix. A few small lumps are fine. Cook in the microwave on high for 60 to 90 seconds, checking at 60 seconds. The cake is done when it has risen, the edges look set, and the centre has just stopped looking wet. It should spring back lightly when touched.

Let it rest for thirty seconds before eating. It will be very hot initially. The texture firms slightly as it cools.

Why matcha works well in mug cakes

Matcha adds both colour and flavour to the cake batter in a way that transforms what would otherwise be a plain vanilla mug cake into something visually striking and more interesting in taste. The earthy, slightly bitter note of matcha works well against the sweetness of the sugar and the richness of the oil or butter. Culinary grade matcha is ideal for baking because its stronger flavour holds up through the cooking process and delivers a clear matcha character in the finished cake.

Variations

Adding a small square of whitechocolate to the centre of the batter before cooking creates a molten white chocolate core that pairs beautifully with the matcha. A teaspoon of desiccated coconut stirred into the batter adds texture. Replacing the vanilla extract with a quarter teaspoon of almond extract gives a different but complementary flavour. A light dusting of icing sugar over the top before serving improves the presentation.

Common questions

Why did my mug cake come out rubbery?  It was overcooked. Reduce the cooking time by ten to fifteen seconds. Every microwave is different and you may need to experiment once or twice to find the right time for yours.

Can I make this in an oven?  Yes. Pour the batter into a small ramekin and bake at 180 degrees Celsius for about 12 to 15 minutes. The result is slightly drier than the microwave version but has a more even texture.

Does it need to be eaten immediately?  Mug cakes are best eaten immediately while warm. They become denser and drier as they cool and do not keep well once cooked.

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