No-Butter Sponge Cake inspired

After the first attempt of making a pound cake, here's another try - sponge cake. I wonder if it is really possible to make a cake without butter.  Luckily, google said yes it does so i'm off to this another attempt to satisfy my pastry cravings. Though, I was really not hoping for the best result i just expect it to be edible enough so it wont be a waste.

Here's how: 

1. Sift flour in a medium-sized bowl.
2. In a small pan, heat milk and butter until bubbling at edge.
3. Let it cool for a few minutes. Set aside. 
4. Combine flour, sugar, eggs, baking powder and vanilla.
5. Mix throughly using an electric mixer, gradually add the milk and butter mixture.
6. Pour mixture into greased cake pan.
7. Cook for 15 minutes or until the top part turns golden brown and toothpick inserted comes out clean.

For the frosting:
Mix small amounts of confectioner's sugar, butter, milk and coffee then that's it.

Yummy ✓ Nice Texture ✓ Satisfied ✓