Creamy Cheesy Spinach Dip

INGREDIENTS

• 1 tablespoon olive oil, divided
• 1 small onion, finely chopped
• 2 cloves garlic, minced
• 2 (10 ounce) packages frozen spinach - thawed, drained, and chopped
• 1/2 cup milk
• 6 ounces cream cheese
• 1/2 cup shredded mozzarella cheese
• 1/4 cup shredded Cheddar cheese
• 2 dashes Worcestershire sauce
• salt and ground black pepper to taste