Break the lasagna sheets, and place in a large microwavable mug.
Add enough water to cover the lasagna, and add olive oil, to ensure the lasagna sheets don't stick together. Microwave for about 3 minutes, or until the lasagna sheets are tender. Drain the lasagna sheets and set aside on a paper towel.
In the same mug, start layering the lasagna, first add the marina, then the broken lasagna sheets, ricotta, spinach and mozzarella and repeat for a total of 3 layers with the mozzarella on top.
Place in the microwave and cook for 2 1/2 - 3 minutes or until the lasagna is heated through and the mozzarella is melted. Top with fresh basil and enjoy!