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.
Line a large baking sheet with aluminum foil. Place lasagna dish on top, cover and put on the middle rack of the oven and bake until top is bubbling, about 30 minutes. Remove cover and continue to bake for about 15 minutes.