
Cook pasta in a large pot of boiling water until
al dente; drain.
Meanwhile, melt butter in a large saucepan. Saute
onion and garlic
over medium heat until tender. Add shrimp; saute
over high heat for
1 minute, stirring constantly. Stir in half-and-half.
Cook, stirring
constantly, until sauce thickens.
Place pasta in a serving dish, and cover with
shrimp sauce. Sprinkle
with black pepper and Parmesan cheese. Garnish
with parsley and lemon
slices.
