This dataset contains anonymized human subjects household survey data collected in Malawi in 2021 and 2023 in collaboration with Good Neighbors International and Good Neighbors Malawi. The dataset includes baseline and endline survey data used for research on climate-smart agriculture adoption and its effects on maize productivity, farm income, and food security outcomes among smallholder households. This dataset contains anonymized human subjects household survey data collected in Malawi in 2021 and 2023. All direct personal identifiers were removed prior to deposit, and the data were reviewed to reduce the risk of re-identification from indirect identifiers. Access to the dataset is restricted due to donor restrictions and participant privacy concerns. Data may be made available upon reasonable request, subject to approval by the data owners and applicable ethical conditions.