01 -
Preheat oven to 350°F (175°C).
02 -
Place all cheese dip ingredients into an oven-safe serving dish, except for 1/2 cup of the mozzarella cheese reserved for topping. It is not necessary to mix the ingredients or thaw the spinach at this stage.
03 -
Bake in the preheated oven until the cheese is melted, stirring occasionally.
04 -
Spread the remaining 1/2 cup of mozzarella cheese over the top of the dip. Continue baking until the top layer of cheese is melted and begins to brown. For deeper browning, use the broiler instead of continuing to bake.
05 -
Serve the cheese dip immediately with chips, crostini, or other preferred dunkers.