Line a 6x6-inch baking dish with parchment paper. Cut the parchment paper 2 inches longer and wider than the dish, so the parchment paper hangs over the edges.
In a large bowl, combine all ingredients up through the ranch dressing mix until smooth and evenly mixed.
4 ounces cream cheese, 1 cup shredded cooked chicken, ¼ cup Buffalo sauce, 1 cup freshly shredded mozzarella cheese, ½ cup freshly shredded cheddar cheese, ¼ ounce ranch seasoning
Press the mixture into the prepared 6x6-inch dish, and smooth the mixture flat with an offset spatula or a rubber spatula.
Cover and freeze until solid or at least 1 hour.
Remove the mixture from the freezer and cut into 1x1-inch squares.
Set up three shallow dishes-- one dish for the flour, one for eggs/milk (beaten), and one for the breadcrumbs.
1 cup all-purpose flour, 4 large eggs, ¼ cup milk, 2-4 cups seasoned Panko breadcrumbs
Dip each mozzarella bite in the flour (shaking off excess), in the egg/milk mixture, in the breadcrumbs, back in the egg/milk mixture and back in the breadcrumbs. Add more breadcrumbs or egg mixture as needed.
Set the prepared mozzarella bite on a small tray until all are ready.
While preparing the Mozzarella bites, pour 3 inches of oil in a medium-sized, deep saucepan and bring the temperature to 350°F.
Canola oil
When oil is ready, carefully place 4 mozzarella bites in the oil and stir to keep separated. The bites are ready when crispy and dark golden brown, approximately 1 minute. Transfer to a clean tray.
Repeat until all mozzarella bites are fried.
Serve hot with desired dipping sauces or dips such as Ranch dip, Buffalo Ranch dip, Honey Mustard, BBQ sauce.