This is like fettuccini alfredo kicked up a notch. VERY delicious & company worthy. It is best served & eaten right after you cook it. The lemon flavor really makes this dish unique--hope you enjoy as much as I did!
Melt butter in large pan. Stir in lemon juice & zest & simmer for about 5 minutes. Add cream & whisk a few times to blend. Then, add 1/4 cup of parm & 1/4 cup of cheddar. When simmering & cheese melts, remove from heat.
Add fettuccini & parsley to sauce & then return to heat. Toss to coat the fettuccini well. Add salt & pepper (you may not even need more salt, I don't.)
Sprinkle w/ parmesan & serve right away to oohs & aahs! :)