Cook pasta according to package directions.
Meanwhile, in a large saucepan, saute garlic in butter over medium heat for 2 minutes.
Stir in flour and salt until blended. Gradually add milk . Bring to a boil; cook and stir for 2 minutes or until thickened. Remove from heat; set aside
Add 1 inch of water to a large saucepan; add broccoli. Bring to a boil. Reduce heat; cover and simmer for 4-5 minutes or until crisp tender. Drain and rinse with cold water
In a greased 9x13 baking dish, layer 1 cup white sauce, half of the pasta and broccoli and 1/2 cup cheese. Repeat layers. Top with remaining cheese and sauce.
Cover and bake at 350 for 25-30 minutes or until heated through.
