Ricotta and banana chocolate-dusted muffins- bbc food

Ricotta and banana chocolate-dusted muffins- bbc food的做法说明

Ingredients
110g/4oz self-raising flour
110g/4oz butter, plus extra for greasing
2 tbsp caster sugar
2 free-range eggs
3 tbsp ricotta
1 banana, mashed with a fork
cocoa powder for dusting