Chocolate Walnut Crumb Bars - Diamond Nuts

Ingredients

• 1 cup butter, softened
• 2 cups all-purpose flour
• 1/2 cup granulated sugar
• 1/4 teaspoon salt
• 2 cups (12oz package) Nestle Toll House semi-sweet Chocolate morsels, divided
• 1 1/4 cups (14oz can) Carnation Sweetened Condensed Milk
• 1 teaspoon vanilla extract
• 1 cup Diamond of California chopped walnuts