Thank you very much for all of your supportive replies. I found them very useful and informative.
@AllanMcPherson, @trizzish and @Luc_H
This could be the case for my younger brother. He does not like any sugary food. If we let him choose between bacon and muffins, he never goes for the muffins. Eating only a piece of cheese cake can make him feel full and he does not want to eat anything for hours after that. I thought muffins are not as sugary as cheese cake so I did not notice about this.
For my older brother, he is perfectly fine with chocolate glazed croissants, doughnuts or anything sweeter than these. I don't know if it would be too much sugar in this recipe. When finding recipes online, I found many of them have over 1 to 2 ratio of sugar to flour. Is me recipe still too sugary? I tried to reduce the sugar to 1/4 cup but it turned out awful. But I will definitely try to bake something healthier.
Yes, I measured the baking powder with measuring spoons as precise as I could.
I used both self raising flour and baking powder because I wanted to make them more fluffy without using eggs and they said the muffins made by self raising powder did not smell good. Then I tried baking with cake flour, they did not complain about that but the muffins were not fluffy as before so I just used the combination of both.
Thanks for your advice. Is it okay to use margarine? Or should I only go for the vegetable oil?
My older brother does not drink milk. He just hates the taste. Although he had no problem with milk when he was a kid, I agree with you that his body may gradually becomes sensitive to lactose. I hope his body can accept the real ingredients because I don't want him to eat too many commercial baking goods full of additives. I will tell you if this works for my family. :)
This is a great idea. I have actually thought of doing this but I think they can easily find out I am cheating them because they believe I cannot make muffins that they do not have complains. lol
We are all twentysomething. When they now hear about I am going to bake, they say they will have breakfast tomorrow so I don't need to worry about them. lol