Chocolate Covered Brown Butter Millionaire's Bars

Bahan-bahan (48 porsi)

• 2 sticks (16 tablespoons) salted butter, at room temperature
• 2 teaspoons vanilla extract
• 1/3 cup dark brown sugar
• 2 cups all-purpose flour
• 2 (14 ounce) cans sweetened condensed milk
• 1 stick (8 tablespoons) salted butter
• 1/4 cup real maple syrup
• 1 tablespoon vanilla extract
• 24 ounces semi-sweet or milk chocolate, chopped
• 2 tablespoon coconut oil
• flaky sea salt