Bring a large pot of salted water to a boil. Cook elbow macaroni in boiling water, stirring occasionally, and cooking according to package directions.
Slowly pour milk into pan while stirring until mixture is smooth and starting to gently boil, about 3-5 minutes. Add cheese to mixture and stir until cheese is melted and well combined.
Pour cheese sauce over drained macaroni and stir gently until cheese sauce is well combined with pasta. Serve immediately.