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.
Homemade fresh lasagna can be cooked at 350 F for approximately 45 minutes. Thawed store-bought lasagna can be cooked at either 350-400 F for anywhere from 25-55 minutes. The time may be adjusted depending on how quickly the entire dish finishes. Frozen store-bought lasagna can be cooked at either 350-400 F for anywhere from 45 minutes to 1 hour and 50 minutes.