Perfect Muffins

Ingredients
70g Butter
1/2 cup Sugar
3/4 cup Sour cream/yoghurt
1/2 tsp Lemon zest
1 1/2 cups all purpose flour
1 1/2 tsp baking powder
1/4 tsp baking soda
1/4 Salt
1 egg

Combos
Blueberries
3/4 cup Blueberry

Raspberry and white chocolate
3/4 cups Raspberry
50 g White chocolate crushed

Method
Preheat oven 190c
spray muffin tins
beat butter with sugar with electric mixer until light and fluffy
add egg and beat well
add sour cream and zest and mix
sift 1/2 the flour, baking powder, baking soda and salt into butter
mix until combined
sift remainder and mix just til flour disappears
fold in the ingredients from your chosen theme
the batter will be thick
fill tins to 3/4 full
bake for 25-30 mins, until top is golden