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 for 30-40 minutes at 375â, covered with aluminum foil. Put a layer of aluminum over the lasagna before it goes into the oven. To prevent the sauce from spilling over the edge as it heats up, you can also place the entire dish on a baking tray to keep the sauce from getting on your oven.