Make French bread pizzas. Slice 6 inches of a baguette lengthwise. Spread 1 to 2 Tbsp. bottled marinara sauce on each slice; top with 1/4 cup shredded mozzarella. Sprinkle with oregano. Bake in toaster oven on medium, or in a 400° oven, for 10 minutes.
Top with anything. Before baking, top with sliced pepperoni, ham, leftover chicken, crumbled bacon or cooked vegetables.