In a large bowl, place the cream cheese, sour cream, mayonnaise, garlic, grated parmesan and grated mozzarella. Mix well. Add the artichoke hearts, spinach, salt and pepper. Fold everything together gently.
325 g cream cheese, 0.25 cup sour cream, 1 tbsp mayonnaise, 1 tsp garlic, 0.75 cup parmesan cheese, 0.25 cup mozzarella cheese, 230 g jarred marinated artichoke hearts, 1.5 cups frozen spinach, 1 tsp sea salt, 1 tsp cracked black pepper