A combi oven combines the best of both worlds: the microwave and an oven. That's because it's an oven with a microwave function. This way, you only need a single device in order to prepare meals in an oven or microwave. The oven function lets you prepare delicious lasagnas, cakes, or even pizzas. Meanwhile, the microwave function is suitable for heating up leftovers or ready-made meals. There are built-in combi ovens, but there also are freestanding models. You can easily install a built-in model in one of your cabinets, which can be convenient if you don't have a lot of space available.