Technically, you can freeze a cake that has been microwaved, but it's important to consider the texture and quality of the cake after freezing and thawing. Microwaving a cake can result in a softer and more delicate texture compared to baking it conventionally in an oven. Freezing a microwaved cake might affect its texture and taste more compared to freezing a traditionally baked cake.
If you have already microwaved the cake and want to freeze the leftovers, here are some tips to do it properly:
Allow the cake to cool completely: Before freezing the microwaved cake, make sure it has cooled down entirely. This prevents excess moisture from forming during freezing.
Wrap it well: Wrap the cake tightly with plastic wrap or aluminum foil to protect it from freezer burn and to minimize the absorption of odors from other foods in the freezer.
Use an airtight container: If you have a suitable airtight container, you can place the cake inside it to protect it even further.
Label and date: It's a good practice to label the packaging with the cake's name and the date it was frozen. This helps you keep track of the storage time.
Freeze promptly: Place the wrapped or containerized cake in the freezer as soon as possible after it has cooled.
Defrosting: When you want to enjoy the cake again, move it to the refrigerator to thaw slowly. Avoid thawing it at room temperature, as this may lead to uneven thawing and potential food safety concerns.
Consume in a timely manner: Microwaved cakes tend to have a shorter shelf life compared to traditionally baked cakes. Consume the frozen cake within a reasonable time to ensure the best taste and texture.
Keep in mind that while freezing a microwaved cake is possible, the quality might not be as good as when it was freshly made. If you can, consider baking a fresh cake and freezing it before microwaving it when needed. This way, you'll likely preserve the cake's texture and taste better.