A popover is a type of baked good that resembles a cross between a pancake and a muffin. It's typically made from a batter that includes butter, sugar, eggs, flour, and milk or yogurt. The resulting dough is poured into a greased popover pan and then baked until puffed up and golden brown. Popovers are known for their light and airy texture, as well as their tall, hollow shape that's perfect for holding toppings like butter or jam. They can be served as a sweet or savory treat, depending on the ingredients used in the batter.