Preheat the oven to 180 degree C or 375 degree F
Grease muffin moulds with butter,if you use silicon Muffin mould or bake and serve Muffin liner then you do no need to grease it
Take a bowl, add eggs or beaten yogurt or condensed milk and beat for 2 minutes or until thick
Add sugar mix them very well until become a creamy texture
Take another bowl,add flour, baking powder and baking soda and mix well
Add the egg sugar mixture slowly into flour mixture,then fold with spatula until the dry and wet ingredients are well combined
Addmilk and butter in a small saucepan
Heat this mixture on low flame until the butter has melted (make sure do not boil the milk butter mixture,just heat )
Add vanilla essence and mix
Mix well
Gradually add this mixture to the cake batter
Fold with spatula slowly until just combined
Do not over mix
Pour the batter into each muffin mould
Bake for about 25- 30 minutes,(Baking times vary oven to oven,so please check after 25 minutes, insert a toothpick of a muffin,if inserted toothpick comes out clean then your cake is ready
