01 -
Bring a large pot of salted water to a boil. Add the pasta and cook to al dente according to package directions. Reserve 1 cup pasta water, drain and return the pasta to the pot, covered.
02 -
In a high speed blender, combine the ricotta, Parmesan, olive oil, garlic, lemon juice and zest, salt, pepper and red pepper flakes. Process for 1 to 2 minutes, or until very smooth.
03 -
Add the ricotta mixture, 1/2 cup of reserved pasta water and spinach to the cooked pasta. Set over low heat and cook until the pasta has absorbed some of the cream sauce and the baby spinach has wilted, about 2 minutes. Add more pasta water as needed until you reach your desired consistency.
04 -
Serve with more grated Parmesan, if desired.