01 -
Preheat oven to 350°F (175°C) and line a 9×9-inch pan with parchment paper. Set aside.
02 -
In a large bowl, combine oats, flour, brown sugar, baking powder, and baking soda. Pour melted butter over the mixture and mix until crumbly, being careful not to overmix.
03 -
Measure out ½ of the mixture (about 2 cups) and set it aside for topping.
04 -
Pour the remaining half of the mixture into the lined baking dish. Press firmly into the bottom of the pan. Bake for 12-15 minutes, or until golden brown. Set aside to cool slightly while you prepare the lemon filling.
05 -
In a large bowl, mix sweetened condensed milk, lemon juice, egg yolks, lemon zest, and salt until smooth and creamy.
06 -
Pour the lemon mixture over the top of the baked oat crust. Evenly crumble the reserved oat mixture over the top.
07 -
Bake for 20-25 minutes, or until edges are golden brown. Allow to cool to room temperature, then refrigerate for 1 hour before serving.