PREPARATION
Cook pasta according to package directions, adding broccolini during last 3 minutes of cooking; drain and keep warm.
Meanwhile, in 2-quart saucepan, melt Spread over medium-high heat and cook onion, stirring occasionally, 2 minutes or until tender. Stir in Knorr® Alfredo sauce mix blended with milk and cheese. Bring to a boil over medium-high heat, stirring frequently. Stir in lemon juice. Reduce heat to low and simmer, stirring occasionally, 2 minutes.
In large serving bowl, toss sauce with hot pasta and broccolini. Serve, if desired, with lemon wedges and additional grated Parmesan cheese.