Bake at 350 degrees Fahrenheit. If baking immediately, bake for 30-45 minutes until bubbly and browned. If cheese begins to brown too quickly, cover loosely with foil. If refrigerating overnight, remove from refrigerator while preheating oven. Remove plastic wrap and cover loosely with foil. Bake 30-45 minutes. Remove foil and bake another 15-20 minutes until bubbly and cheese is browned. If lasagna has been frozen, thaw in refrigerator overnight, then follow directions for baking refrigerated version.