Preheat oven to 350˚F.
Put AP flour, almond flour and sugar & salt in food processor and pulse to combine.
Add butter & vanilla extract and pulse until it resembles coarse meal.
Butter an 8x8 pan, pour everything into the pan, flatten with a offset spatula. Then, press firmly with your hands & spatula.
Bake in the oven for 30-35 minutes at 350˚F until lightly browned. Check at 30 min. mark.
Let it chill until cool. It can take a while so be patient!
