Does your 2-year-old want a peanut butter sandwich for lunch every day? It sounds like your child is on a "food jag." Food jags are common in the toddler and preschool years. More frustrating for you than harmful for kids, the best approach is to stay low key. The more you focus on food jags, the longer they may last. You can offer peanut butter sandwiches every day, just include other foods with it to encourage variety. Most "monotonous eaters" soon tire of eating the same food.