This Jelly Donut in a Mug is light, moist, and fluffy, with the center filled with strawberry jam! It is easy to make in less than five minutes and tastes just like a bakery jelly donut.
Place the butter in a medium to large microwavable mug and microwave until just melted, about 25 seconds.
Add sugar to the melted butter and mix well with a fork. Add the flour, baking powder, salt, cinnamon, vanilla, and milk and mix until just combined and smooth.
Place 1 tablespoon of the jam into the center of the batter.
Microwave for 60 seconds or until risen and firm on top. Depending on the type of microwave, the cooking time may vary from 60 seconds to a little more than a minute. So, it is best to watch the mug while it is in the microwave to avoid overcooking.
Allow the doughnut in the mug to cool for 8-10 minutes. Top it with cinnamon sugar and more jam if desired, and enjoy!
Notes
Mug: A medium to large mug is fine for this recipe. However, try to use at least 12-14oz mug.
Measuring The Ingredients: If you have a kitchen scale, weigh the ingredients for the best result.
Cooking The Jelly Donut: Do not overcook this Jelly Donut in a Mug. Start with 60 seconds, then cook for 10-20 seconds as necessary.