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.
Step 2. Heat the lasagna in the oven until the fillings begin to sizzle. Take the internal temperature of the lasagna; it should register at 165 F using a kitchen thermometer when it is fully heated.This may take upwards of 1 hour to complete, depending on the number of layers included and how large a lasagna you are reheating.tep 3. Take the foil cover off of the lasagna and continue cooking it for about 10 more minutes, until the top is well browned. Remove the lasagna from the oven and allow it to rest for 5 to 10 minutes before serving.