Zesty Lemon Squares with Oatmeal Base and Tart Filling - Yummy Gusto

Ingredients

• 1 ¼ cups plain flour
• 1 ¼ cups traditional rolled oats
• ½ teaspoon salt
• ½ teaspoon baking soda
• ½ cup white sugar
• ½ cup soft light brown sugar
• ¾ cup melted unsalted butter
• 1 teaspoon vanilla flavoring
• 1 can (396g/14oz) condensed milk
• 2 tablespoons finely grated lemon peel
• ½ cup freshly squeezed lemon juice
• 2 large egg yolks