Toffee Squares - Oryana

Ingredients

• 1 cup butter (2 sticks) + more for coating the pan
• 1 cup brown sugar, packed
• 1 egg yolk
• 1 teaspoon vanilla
• ¼ teaspoon sea salt
• 2 cups all-purpose flour
• 1 ½ cups milk or semi-sweet chocolate, melted
• ½ cup chopped nuts such as pecans, sliced almonds, or chopped hazelnuts