DEAR DR. ROACH: Several years ago, I attended a presentation about insomnia. A registered nurse discussed how, in her career as a nursing home nurse, she had many residents with insomnia. She stated that she had amazing success with these residents. The snack they gave residents was crackers and cheese or peanut butter crackers. I was skeptical at first, then one night at 2 a.m., on my fourth night of insomnia, I tried eating 2 teaspoons of peanut butter. Bingo! I slept. Whenever my insomnia occurs, I eat 2 teaspoons of peanut butter, and in less than 15 minutes I'm sleeping.