This study evaluates the effectiveness of a variation of the high-probability (high-p) sequence involving bites of food as high-p tasks on the acceptance of low-probability (low-p) foods in an adolescent with autism spectrum disorder. After demonstrating the effectiveness of the high-p sequence using a reversal design, the participant's mother implemented the intervention. Intervention effects were partially maintained during 7-month maintenance probes. Implications for research and practice are provided.