This study investigated the effects of a parent-implemented dialogic reading approach—Reading to Engage Children with Autism in Language and Learning (RECALL)—on the engagement in reading and inference-making ability for preschoolers with autism spectrum disorder (ASD). Thirty-one preschoolers (mean age = 5.90 years, SD = 0.69; 26 boys, 5 girls) were randomly assigned to a treatment or control group. Six weeks of RECALL significantly enhanced story comprehension, emotion knowledge, and reading engagement among preschoolers in the treatment group. This might be the first randomized controlled trial testing the effects of RECALL on children with ASD. Our findings suggest that additional instructional support such as the application of a prompting hierarchy during dialogic reading might help children with ASD reap greater benefits from shared book reading.