The purpose of this study was to describe the components and use of motivational interviewing (MI) within a behavior change intervention to promote healthful eating and family meals and prevent childhood obesity. The Healthy Home Offerings via the Mealtime Environment (HOME) Plus intervention was part of a two-arm randomized-controlled trial and included 81 families (children 8–12 years old and their parents) in the intervention condition. The intervention included 10 monthly, 2-hour group sessions and 5 bimonthly motivational/goal-setting phone calls. Data were collected for intervention families only at each of the goal-setting calls and a behavior change assessment was administered at the 10th/final group session. Descriptive statistics were used to analyze the MI call data and behavior assessment. Overall group attendance was high (68% attending ≥7 sessions). Motivational/goal-setting phone calls were well accepted by parents, with an 87% average completion rate. More than 85% of the time, families reported meeting their chosen goal between calls. Families completing the behavioral assessment reported the most change in having family meals more often and improving home food healthfulness. Researchers should use a combination of delivery methods using MI when implementing behavior change programs for families to promote goal setting and healthful eating within pediatric obesity interventions.