I am using 5x7 Pyrex pan.
Grease the Pyrex pan with butter and mix all the ingredients. Clean the sides and cook for 3 minutes in microwave.
Stir it and cook again for 2 minutes. Stir it and cook again for another 2 minutes. If cake is soft cook again for 1 more minute without stirring. It took me 8 minutes to make it. Let it cool of and cut into squares and enjoy.