Objective. To evaluate the effectiveness of the parent- and early care education (ECE) center-based Lunch is in the Bag program on communication between parent, child, and their ECE center providers around fruits, vegetables and whole grain foods (FVWG). Method. A total of n = 30 ECE center; 577 parent-child dyads participated in this group-randomized controlled trial conducted from 2011 to 2013 in Texas (n = 15 ECE center, 327 dyads intervention group; n=15 ECE center, 250 dyads comparison group). Parent-child and parent-ECE center provider communication was measured using a parent-reported survey administered at baseline and end of the five-week intervention period. Multilevel linear regression analysis was used to compare the pre-to-post intervention changes in the parent-child and parent-ECE center provider communication scales. Significance was set at p 0.05. Results. At baseline, parent-child and parent-ECE center provider communication scores were low. There was a significant increase post-intervention in the parent-ECE center provider communication around vegetables (Adjusted [beta] = 0.78, 95%CI: 0.13, 1.43, p = 0.002), and around fruit (Adjusted [beta] = 0.62, 95%CI: 0.04, 0.20, p = 0.04) among the parents in the intervention group as compared to those in the comparison group. There were no significant intervention effects on parent-child communication. Conclusion. Lunch is in the Bag had significant positive effects on improving communication between the parents and ECE center providers around FVWG. (author abstract)