Heat oven to 400° F.
Using a round cookie or biscuit cutter, cut out as many circles as possible, avoiding the crust. Transfer to a baking sheet. Sprinkle with the toppings (except the fresh herbs, if using). Bake until warm, 5 to 10 minutes. Top with any fresh herbs (if using) and serve.
Tip: These miniature pizzas work well in almost any setting, from a Friday-night supper for the kids to a holiday cocktail party.