The Building Up Food Flexibility and Exposure Treatment (BUFFET) program helps autistic children 8-12 years old to be more flexible with trying new or non-preferred foods. BUFFET-Snack is a brief version of this treatment program. The goal of this study is to see if families can complete BUFFET-Snack and if they like it. BUFFET-Snack is a cognitive behavioral therapy. It will be a good fit for children who can communicate with full sentences and have some back-and-forth conversation skills.