Preheat oven to 400F/180C.
Mix starter, sugar, buttermilk and oats. Allow to soak for 10-15 min.
Mix dry ingredients: flour, baking powder, bi-carb, salt and spices.
Add 1 large egg and neutral oil to the soaked oat mixture.
Combine the flour mixture into the wet mixture.
Fold in mini semi-sweet chocolate chips.
Scoop into greased muffin tins with an ice cream scoop.
Top with coarse sparkling sugar.
Bake 20-25 minutes, rotating pan halfway through. Allow to cool for 5 minutes before removing onto cooling rack.