Make sure the oven rack is in the lower 1/3 of the oven and preheat the oven to 400 degrees F.
Lay the pita rounds on 2 large baking sheets. Pour 1/4 cup of the Best Basic Red Sauce or pizza sauce on each round and spread it evenly with the back of the spoon. Top each with 1/4 cup of the grated cheese.
Bake until the cheese is bubbly and golden brown, about 6 to 8 minutes. Using oven mitts or pot holders, remove the sheets from the oven. Cut each pita pizza into 6 slices with a sharp knife or pizza cutter, transfer them to a plate using a turner, and serve immediately.
Best Basic Red Sauce:
In a medium, heavy pot, heat the oil over medium heat. Add the onions, garlic, salt, basil, oregano and black pepper, and cook, stirring, until soft, 5 minutes.
Place the tomatoes in a large bowl and squeeze to break into small pieces. Add the tomato sauce, tomato paste, water, and sugar to the pot and stir well. Bring to a simmer over medium-high heat.
Lower the heat to medium-low, and simmer uncovered for 45 minutes, stirring occasionally with a heavy wooden spoon.
Eat-a-Pita Pizza for 1: For each pita round, you'll need just 1/4 cup of the Best Basic Red Sauce or store-bought pizza sauce and 1/4 cup of your favorite grated cheese. Preheat a toaster oven to 400 degrees F and assemble your pita pizza according to the directions above. Carefully place your pita pizza in the toaster oven and bake it for 6 to 8 minutes, until the cheese is bubbly and golden brown. Using a turner, carefully transfer your pita pizza to a cutting board and cut it into 6 slices with a sharp knife or pizza cutter. Transfer the pita pizza to a plate and serve immediately.