size clumps. mine were more like broad bean clumps).
now make the base. put the flour, oats, sugar, baking powder and lemon zest into a mixing bowl and mix together thoroughly with a wooden spoon. gently melt the butter in a small pan. leave to cool. beat the eggs and milk in a small bowl with a fork until just combined. add the melted butter and milk mixture to the flour mix in the bowl and stir gently until just combined. there’s no need to beat the mixture.
spoon the mixture into 12 paper cases in the muffin tray so they are evenly filled. top each with an equal amount of chopped 