Generously grease a microwavable-safe bowl with butter.
Add jam to the bottom of the bowl and gently spread it around the sides. Set it aside for later use.
180 g Jam
Add butter and caster sugar to a large mixing bowl and cream together until light and fluffy.
120 g Butter, 120 g Caster Sugar
Add two eggs and vanilla extract and mix together until evenly combined
2 Eggs, 1 tsp Vanilla Extract
Pour the flour into the bowl and mix together until a cake batter has formed.
120 g Self-Raising Flour
Gently spoon the cake batter on top of the layer of jam and smooth out the top using a spoon.
Microwave on full power for 5 minutes or until the cake batter is fully cooked. (When you take the cake out of the microwave, the top of the batter might look slightly wet but it’s fully cooked).
Use a knife or a spatula and run it around the sides of the bowl. Carefully flip the sponge pudding onto a serving plate and enjoy!
Video
Notes
I used a 1 litre glass bowl. Cooking times may vary depending on the type of microwave you are using. My jam pudding took 5 minutes for the sponge to cook in the microwave on full power (800w microwave). Bear in mind, plastic bowls do not conduct heat as well as glass bowls, so cooking times are likely to increase if that’s what you are using.Note: Take care with turning the cake onto a plate as the bowl and jam will be extremely hot!