1 teaspoon olive oil
1/2 cup low-fat jarred marinara sauce
1/2 cup shredded mozzarella cheese
Other toppings if desired (chopped veggies, chicken sausage, ham cubes)
Preheat the broiler to high. Brush the polenta with the olive oil on both sides and place the disks on a broiler pan covered with foil. Broil until the tops begin to turn golden, about 1 minute (watch closely as broiler heat varies). Flip the polenta disks over and spread about 1 tablespoon of the marinara sauce on each one, then top with cheese and other toppings (if using). Broil until the cheese is golden and bubbly, about 1 more minute. Let cool a few minutes and serve.