From frozen state.

Conventional Oven:
Preheat oven to 375 degrees F.
Remove packaging and place pizza on a cookie sheet on the top rack of oven. Bake 12-15 minutes. Remove pizza. Cool for 1-2 minutes before cutting.

Microwave:
Remove plastic wrap.
Place on microwave safe plate and heat pizza on HIGH for 2-3 minutes.

Appliances vary - time and temperature may need adjustment.