Magical Twix Cookies My Homemade Caramel Dream Come True

Ingredients

• 1 cup (2 sticks; 227g) unsalted butter, softened
• 1/2 cup (100g) granulated sugar
• 1 teaspoon vanilla extract
• 2 cups (250g) all-purpose flour
• 1/4 teaspoon salt
• 1 cup (200g) granulated sugar
• 1/4 cup (60ml) water
• 1/2 cup (1 stick; 113g) unsalted butter, cut into pieces
• 1/2 cup (120ml) heavy cream
• 12 ounces (340g) semi-sweet or dark chocolate, chopped
• 1 tablespoon coconut oil or vegetable shortening (optional)