Preheat oven to 350℉. Line a 9 x 13 pan with parchment paper.
To the bowl of a stand mixer add all of the ingredients for the base. Mix on low speed until a crumbly mixture forms.
Dump into prepared pan and using your fingers press down into an even layer.
Bake for 18-20 minutes, just until a light golden colour.
Meanwhile in a large bowl, mix together the lemon zest, juice and sugar. Once this is a smooth mixture add in the remaining ingredients. Whisk until smooth.
When the base is done, pour the filling onto it and bake another 20-25 minutes just until the edges start to brown. Do not overtake.
Let cool in pan on cooling rack until completely cool before slicing.
Recipe by Chateau Elma at https://www.chateauelma.com/lemony-lemon-bars