Add all ingredients to a large bowl and beat together until combined.
Pour into a 9-inch greased pie pan. Bake for 1 hour or until centre is firm and pie is golden.
Cool on a cooling rack and then put in the fridge until ready to serve. I recommend waiting a few hours so the pie has a chance to firm up.
Video
Notes
Reader tip: Mix the butter, sugar, flour and vanilla together first. Then add the eggs and milk. This is helpful to prevent clumping.Place a baking sheet under the pie in case it runs over the top while baking.