Chocolate Oatmeal Bars Recipe

Ingredients

• 1 cup plus 2 tablespoons butter, softened, divided
• 2 cups packed brown sugar
• 2 large eggs, room temperature
• 4 teaspoons vanilla extract, divided
• 3 cups quick-cooking oats
• 2-1/2 cups all-purpose flour
• 1-1/2 teaspoons salt, divided
• 1 teaspoon baking soda
• 1 can (14 ounces) sweetened condensed milk
• 2 cups semisweet chocolate chips
• 1 cup chopped walnuts