The idea of eating cookies as a diet was all it took to try Dr. Sanford Siegal’s Cookie Diet cookies, as they sounded delectable enough. Thing is, this isn’t your everyday, ordinary cookie. The Miami doctor created the cookies in 1975 in his kitchen and introduced them to his diet patients to help curb hunger cravings. According to Siegal, the cookies work because they suppress hunger for longer than most “diet” foods.

“It’s no secret that to burn fat, you have to eat less calories than your body requires,” he said. “That’s hard to do when you’re hungry. That’s what my cookie is for. The cookie is hunger-suppressing and is therefore adaptable to a variety of diets.”