Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. With distinctive ...

Using her preferred all-in-one method, Mary's easiest ever chocolate cake recipe is simply filled with cream and jam. This is a light and airy chocolate cake for those who don't like it too rich.

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Jackie Reeve Jackie Reeve is a writer covering all things bedding. She ...