French Onion Dip

Ingredients (12)

• 2 tablespoons olive oil
• 4 medium onions
• 1 1/2 teaspoons salt, divided
• 2 cups sour cream
• 1/3 cup mayonnaise
• 1 teaspoon garlic powder
• 1 tablespoon lemon juice
• 1 teaspoon Worcestershire sauce
• 1/2 teaspoon ground black pepper
• 1 shallot, minced
• 1/4 cup chives, finely chopped
• Potato chips, for serving