A cookie has landed a woman behind bars for 48 hours after lawmen found chocolate chips weren’t the only ingredient in her secret recipe.The woman, Taylor K. Johnson, 21, of Oakley, Mich., maintained she could explain why cookies found in her possession contained marijuana. According to Johnson, she has a prescription for medical marijuana in her home state of Michigan. She admitted she should have left her marijuana at home when she came here to visit.General Sessions Judge Bill Locke still handed down a 48-hour sentence along with a year’s worth of probation for her illegal possession.