Can you make mug cakes in an oven?

Yes, you can make mug cakes in an oven, although they are typically prepared in a microwave for convenience. To do so, pour the mug cake batter into an oven-safe mug and bake it at a temperature of around 350°F (175°C) for about 15-20 minutes, or until a toothpick inserted in the center comes out clean. Just be sure to adjust the baking time based on the size of the mug and the oven's characteristics.