Cooking fruits and veggies can often reduce the nutritional value, thus it is best to eat them raw or include tomatoes in salads, juices, smoothies, cold soups, sandwiches.
Recipe:
To make a quick tomato smoothie, just take 1 large tomato, 1/2 cup grated carrot, 3-4 coriander leaves, 1/2 inch ginger and 2 teaspoon lemon juice. Make a smooth blend, add in salt and pepper. Enjoy!