These are the main ingredients. I used this size heatproof container.
Place the butter in the heatproof container, and microwave for 20 seconds at 500 W to melt.
Dissolve the instant cocoa mix in the lukewarm water in a bowl. Add the melted butter and beaten egg in that order, and mix well.
Grease the container with vegetable oil using a brush or a paper towel
Add the pancake mix into the bowl and mix well so that the mixture is not lumpy.
Pour the mixture into the container, and tap it on the counter several times to remove air.
Microwave it for 2.5 minutes at 500 W.
This is right after microwaving. Remove from the microwave, and let it cool.
When it's cooled, it shrinks a little bit.
Chill in the fridge for 2-3 hours, sprinkle on powdered sugar, and it's done.
Story Behind this Recipe
There are so many gateau au chocolat recipes, but I wanted an easy recipe without using the oven. I finally arrived at this recipe after many failures. It's not too fluffy and not too moist. It's so good that I can't even believe it was microwaved.
Don't whisk the pancake mix, but make sure to mix well so that the mixture is not lumpy.