Couple years ago. Each muffin only has 89 calories and 0.2 grams fat. They are really tasty, rise well, and are nice and light in texture. Based on my personal experience, I strongly recommend you not use muffin papers. But if you do a 1-second squirt of Pam (or equivalent) in each cup, they'll slide right out. They freeze well, too. Enjoy.
NOTE: Do not use muffin papers-the muffins become one with the papers.