Oreo muffins

Ingredients
Flour 1 ¾ cup
Baking powder 2 tsp
Salt ½ tsp
Oreo cookies 8 to 10 (break each cookie into 4 pieces)
Sour cream ½ cup
Egg 1
Milk ¾ cup
Caster sugar ½ cup
Melted butter 3 ounces
Vanilla essence 1 tsp
Method
Sieve together flour and baking powder, mix with salt, in a bowl add 1 egg, milk, caster sugar, sour cream, melted butter, beat for 2 minutes, fold in sieved dry ingredients and also fold into broken Oreo cookies, pour batter into cupcake liners kept if muffin tray, bake for 20 minutes on 180 degree C.