Sourdough Lemon Muffins

Preheat oven to 180C/350F and grease a 12 hole muffin tin with butter.
Mix the sourdough starter, eggs, lemon juice, vanilla extract and oil in a bowl. Whisk together until well combined. It's ok if the oil sits on the top, it will combine once it is poured into the dry ingredients.
In a separate bowl mix together all purpose flour, salt, baking powder, lemon zest and sugar.
Now pour the liquid ingredient mixture into the dry ingredients. Gently fold together until just mixed - don't over mix or the muffins will be tough.
Spoon mixture into greased muffin tin. This recipe will fill a 12 hole muffin (each hole around ¾ full).
Bake at 180C/350F for approximately 20 minutes or until muffins are golden brown.
While the muffins are baking, mix together the powdered sugar and lemon juice.
Once the muffins are cooked, spoon the lemon glaze onto the muffins while they are still in the muffin tin. Let the lemon glaze soak into the muffins and cool slightly before removing them from the tin.