Leave frozen spinach out to thaw at room temperature. Drain the excess water and blot the excess moisture with paper towels. Set aside.
Preheat oven to 350 F. Get out a 1.5-2 qt baking dish, or multiple smaller oven-safe dishes and set aside.
In a medium mixing bowl, using an electric hand mixer, mix together the softened cream cheese and sour cream until homogeneous.
Using a rubber spatula, fold the thawed spinach, 1/2 cup shredded mozzarella, shredded parmesan, 90% of the bacon pieces, and minced garlic into the cream cheese mixture.
Transfer the mixture to the baking dish(es) and top with the remaining bacon pieces and 1/4 cup shredded mozzarella cheese. Bake for 12 minutes at 350 F and then broil on low for 1-2 minutes or until golden and bubbly.
Enjoy with fried wonton chips, tortilla chips, potato chips, baguette slices/crisps, or crackers!
