Fairfax County Virginia. Demographics & Data. Fairfax County is a diverse and thriving urban county. As the most populous jurisdiction in both Virginia and the Washington, D.C. metropolitan area, the county's population exceeds that of eight states and the District of Columbia.
1 Preheat oven to 375 degrees F (190 degrees C). 2  Bring a large pot of lightly salted water to a boil. 3  Add lasagna noodles, and cook for 5 to 8 minutes, or until al dente; drain. 4  Lay noodles flat on towels, and blot dry.
Bake frozen lasagna for approximately 1 1/2 hours. Take the foil off the baking dish and bake for another 30 minutes or until the top is lightly browned and bubbling. Use potholders or oven mitts to remove the lasagna from the oven. Let it sit for 10 to 15 minutes before cutting it into pieces and serving.