It’s so rich and decadent and it will go great with your cup of Joe!!! Really easy to make and bake and you have all the ingredients in your home and pantry!!
Preheat the oven to 350F degrees. Line the pan with parchment paper, leaving an overhang around the edges.
In a stand mixer bowl, beat the butter and powdered sugar until fluffy.
Mix in the flour. Remember to scrape the sides and bottom of the bowl and do the last mix with a spatula.
Press the mixture into the bottom of the pan.
Bake in the preheated oven for 15-20 minutes or until the top looks set and is a pale, golden color. Remove from the oven and leave the oven turned on.
FILLING
While the crust is in the oven, mix together the melted butter and brown sugar until smooth.
Add in eggs, one at a time, then add the vinegar and vanilla.
Pour over crust and bake another 25-30 minutes until filling is set or almost set — a slight jiggle is fine but you don’t want a lot of movement.
Cool to room temperature and refrigerate several hours before cutting into squares.