For 11 muffins:
2 + 1/4 cup flour
3/4 cup sugar
2-3 drops of vanilla extract
1 pinch of salt
1 + 1/4 cup milk
2/3 stick (2/3 cup) butter
2 teaspoon baking powder
Optional : 1+1/4 cup / 1+1/2 cup milk chocolate chips
Melt the butter, preheat oven to 390°F.
In a medium bowl, add the milk, eggs (I beat the mix between each egg, as with an omelette, I think it gives a better texture), vanilla, baking powder, sugar, salt, melted butter and then flour.
Optional : you can add the chocolate chips.
Spread in a muffin pan (or a cake or others), cook for 15 minutes.