Freezer Friendly Instructions: Double this recipe if you'd like to make an extra to freeze! Put together a 2nd casserole, and wrap up tightly to freeze. Freeze 1/3 cup of the garlic tomato sauce and 1/2 cup mozzarella cheese additionally to use as the topping. When ready to enjoy the 2nd lasagna, allow the lasagna to thaw for at least an hour. Do not put glass baking dish directly in the oven. If the casserole is still very cold when baking, the initial baking time will need increased by 10-15 minutes.