• prep: 1 hr
• cook: 20 min
• total: 1 hr 20 min

servings:

A sweet treat so decadently rich it's been named "Millionaire's Shortbread".

• 1 cup unsalted butter, softened ((226g))
• ⅓ cup sugar ((70g))
• ⅓ cup light brown sugar, packed ((70g))
• 1 large egg yolk
• ¾ teaspoon vanilla extract
• ½ teaspoon salt
• 2 ¼ cups all-purpose flour ((260g))
• 2 14-oz cans sweetened condensed milk ((792g))
• 14 Tablespoons butter (cut into Tablespoon-sized pieces (198g))
• 1 cup light brown sugar (packed (200g))
• ⅓ cup light corn syrup ((80ml))
• 1 teaspoon vanilla extract
• ¼ teaspoon salt
• 2 cups semisweet chocolate chips ((340g))
• ½ cup heavy cream ((120ml))
• ½ teaspoon vanilla extract ((5ml))
• sea salt for sprinkling

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