In this detailed guide, find out to create Martha's damp, fluffy coffee cake layered with an abundant cinnamon streusel topping that's perfect for breakfast or an afternoon reward. With simple ingredients and easy-to-follow directions, you'll make this wonderful dessert once again and once again. Your early morning coffee will never ever be the same! Brought to you by Martha Stewart: Subscribe for more Martha now: Want more Martha? Twitter: Facebook: Pinterest: Instagram: Google Plus: Martha's Official Blog…