Add butter to a medium-sized pot and gently heat until just melted.
Add Arborio rice, stir through the butter.
Add water and simmer rice gently until just absorbed.
Add half the milk and continue to simmer again until just absorbed, stirring occasionally.
Mix the egg yolk with the remaining half of the milk and add to pot. Add sugar and vanilla essence and continue to simmer until just absorbed, stirring occasionally.
Taste test the rice to check if it’s perfectly cooked, adding a little extra milk if needed. Serve and enjoy!
Recipe by Mrs Organised at http://www.mrsorganised.com.au/2015/05/31/rice-pudding/