Can be made in less than 5 minutes without an oven, and the entire recipe is < 100 calories… including the streusel topping! http://chocolatecoveredkatie.com/2015/01/13/low-fat-banana-breakfast-cake-mug/
When I don’t feel like making an entire batch of muffinss, I rely on my single serving chocolate chip muffin. It’s low fat, whole wheat, and full of chocolate chunks. Sometimes I just don’t need 11 extra muffins laying around!