Place spaghetti squash an a microwavable dish, sprinkle with water and cook until a fork can be inserted into the squash, about 8 to 10 minutes. Squash can also be steamed on the stove top in a covered pan for 20 to 30 minutes.

Allow squash to cool then shred the squash with a fork.

Place of squash into pan and top with can tomatoes.

Repeat with other half of squash and tomatoes. Sprinkle with cheese and return to microwave for approximately 3 minutes until heated through and cheese is melted. You can also bake the squash, covered, for 30 minutes until it is piping hot and the cheese is melted.