Malawi has a mature integrated community case management (iCCM) programme that is led by the Ministry of Health (MOH) but that still relies on donor support. From 2013 until 2017, under the Rapid Access Expansion (RAcE) programme, the World Health Organization supported the MOH to expand and strengthen iCCM services in four districts. This paper examines Malawi’s iCCM programme performance and implementation strength in RAcE districts to further strengthen the broader programme. Baseline and endline household surveys were conducted in iCCM-eligible areas of RAcE districts. Care-seeking from HSAs and treatment of fever improved over the project period. At endline, however, less than half of sick children were brought to an HSA, many caregivers reported a preference for providers other than HSAs, and perceptions of HSAs as trusted providers of high-quality, convenient care had decreased. HSA supervision and mentorship were below MOH targets. Stockouts of malaria medicines were associated with decreased care-seeking from HSAs. Additional qualitative research is needed to examine challenges and to inform potential solutions. Malawi’s mature iCCM programme has a strong foundation but can be improved to strengthen the continuity of care from communities to facilities and to ultimately improve child health outcomes.