How to Make Homemade Blueberry Muffins - Recipe by Laura Vitale - Must Watch Video

Easy Recipe!
Here's the recipe in UK measurements:

85 grams of butter
170 grams of sugar
2 eggs
112 grams of sour cream
3/4 tbsp vanilla
1/2 tbsp orange zest
2 tbsp of baking powder (i dont have self-raising flour)
and 190 grams of flour