Preheat oven to 350 degrees.
Slice bagel in half and lightly toast. Place toasted bagel halves on oven proof pan or baking sheet. Top each bagel half with 2 tablespoons each of prepared pizza sauce. Sprinkle 2 tablespoons of grated cheese on top of each half.
Put pan in preheated oven and bake for approximately 7 minutes, or until sauce is heated through and cheese is melted.