Ingredients (makes 12 muffins)
100g unsalted butter, softened
140g golden caster sugar
3 medium eggs
140g full fat Greek yogurt
1tsp vanilla extract
2tbsp milk
250g self raising flour
2tsp baking powder
1tsp bicarbonate of soda
1/4 tsp salt (leave it out if using salted butter)
125g fresh blueberries
1tbsp flour to coat blueberries