1 1/4 cups all-purpose flour
1 1/4 cups rolled oats
1/2 teaspoon salt
1/2 teaspoon baking soda
1/2 cup granulated sugar
1/2 cup packed light brown sugar
3/4 cup unsalted butter, melted
1 teaspoon vanilla extract
1 (14 oz.) can sweetened condensed milk
1 tablespoon lemon zest
1/3 cup lemon juice
2 large egg yolks
1/2 teaspoon vanilla extract