Tuna Pizza

1 (8 ounce) package cream cheese, softened

1 (14 ounce) package pre-baked pizza crust

1 (5 ounce) can tuna, drained and flaked

½ cup thinly sliced red onion

1 ½ cups shredded mozzarella cheese

crushed red pepper flakes, or to taste

Preheat an oven to 400 degrees F (200 degrees C).

Spread the softened cream cheese on the pre-baked crust. Sprinkle the tuna and onions over the pizza; then top with shredded mozzarella cheese and optional red pepper flakes. Bake in preheated oven until the cheese has melted and started to brown, about 15 to 20 minutes.