The Eat Healthy, Grow Healthy (EatGrow) program is a family-based, fully virtual nutrition education intervention designed to improve fruit and vegetable intake among preschool-aged children. Parents and their children participate together in interactive online lessons over eight weeks, including parent-child cooking, taste-testing, and engaging nutrition education. Recruitment was conducted via schools, but schools are not involved in delivering the program. The study measures changes in children's fruit and vegetable intake and willingness to try new foods, as well as parental nutrition literacy, attitudes, and self-efficacy. Weekly tasks are included for engagement.

Childhood obesity is a major public health concern, and increasing fruit and vegetable intake is an effective prevention strategy. The EatGrow study is a family-based, fully virtual intervention targeting preschool-aged children and their parents. Recruitment was conducted via schools; however, schools do not participate in delivering the intervention.

The study has three primary aims:

Aim 1: Assess changes in parental nutrition literacy, attitudes, and self-efficacy regarding incorporating fruits and vegetables into daily meals.

Aim 2: Evaluate the effectiveness of the EatGrow virtual nutrition education intervention in increasing fruit and vegetable intake among preschool-aged children.

Aim 3: Determine whether the intervention reduces food neophobia and increases children's willingness to try a variety of fruits and vegetables.

The intervention is delivered over eight weeks via interactive online modules. Activities include parent-child cooking, taste-testing, and interactive nutrition education. Weekly engagement tasks are included to encourage participation. Outcomes are measured through parent-completed surveys assessing their child's dietary intake and food preferences, as well as parental nutrition knowledge, attitudes, and self-efficacy.

This study aims to provide evidence on the effectiveness of virtual, family-based interventions in promoting healthy eating behaviors and preventing childhood obesity.

Inclusion Criteria:

• Parent or primary caregiver of a preschool-aged child (3 to 5 years old) enrolled at one of the participating schools.
• Responsible for the home food environment, including meal preparation.
• Access to a stable internet connection and an internet-enabled device (e.g., "smartphone," tablet, or computer).
• Willingness to participate in the full intervention and complete weekly tasks.
• Ability and willingness to purchase ingredients for weekly virtual cooking sessions.
• Ability to read, speak, and understand English.

Exclusion Criteria:

• Families unable or unwilling to purchase ingredients for weekly recipes.
• Children or parents/caregivers with known allergies to fruits and/or vegetables.
• Families without reliable internet access.
• Parents/caregivers who are unable to read, speak, or understand English.

Individual participant data (IPD) will not be shared due to the inclusion of sensitive information involving parent-child dyads and to protect participant confidentiality in accordance with IRB guidelines.

This is an open-label study. No participants, caregivers, investigators, or outcome assessors are masked