This study tested the effectiveness of a writing planning strategy (STOP & LIST) with four struggling students from fourth grade. A multiple-baseline design (AB) was used with baselines consisting of between five and seven daily probes. The duration of the intervention was between five and seven 25-minute sessions. A randomization procedure was implemented within the constraint that the baseline had to comprise at least five measurements and the treatment had to comprise at least three. The data were analyzed using visual inspection, different effect sizes, randomization tests, and piecewise regression analyses. Results revealed distinct improvements in both the length and quality of stories that the participants produced from baseline to the end of the training. This indicates that the ability of young struggling writers to plan narratives can be fostered considerably through rather simple means. Implications for practice and future research are discussed.