The purpose of this study is to evaluate whether a behavioral weight loss group in conjunction with a prescribed breakfast can help children between 8 and 12 years of age change their behaviors to help them lose weight and become healthier.

The purpose of this application is to evaluate the acceptability and initial efficacy of consumption of an egg breakfast, compared to a cereal breakfast, in the context of Family-based Behavioral Treatment (FBT) with overweight and obese children and their parents. Investigators will randomize 66 parents and their overweight and obese child (85-99.9%BMI) to FBT+egg or FBT+cereal groups. Families will eat their assigned breakfast (eggs or cereal) 5 out of 7 days during the 4 month FBT treatment. However, all other aspects of FBT will be the same in the two groups. Children and parents will complete assessments at three time points; baseline, post-treatment and 4-months post-treatment.

Inclusion Criteria:

1. Children between the ages of 8 and 12 years old;
2. BMI ≥85th% and <100% overweight
3. Children with parents who are willing to attend 16 weekly group sessions and be randomized to either treatment arm;
4. Have at least one parent who is overweight or obese (BMI≥25);
5. Children and parent who endorse liking of both eggs and cereal
6. Parents who speak English at a 5th grade level.

Exclusion Criteria:

1. Children with serious medical conditions that affect their weight;
2. Children taking medication that affect appetite or weight;
3. Children with severe developmental delay or disability that would affect participation;
4. Children or parents with psychological illness that would limit treatment participation;
5. Families who plan to move out of the area within the time frame of the study.