The lasagna packet comes with instructions to cook it. This usually involves boiling the noodles in water. Do so according to packet instructions.
Preheat your oven to 350 degrees so that it is warm when you start baking the lasagna.
If you are using canned spinach, squeeze it. If you are using fresh, clean it thoroughly and free itof any dirt. Now chop it into shreds. Take the tofu blocks, wash them and dry them with paper towels.
Take the blender and add to it the washed tofu, sugar, soy milk, garlic cloves, lemon juice, basil and oregano and blend them all together to make a smooth mixture.
In a large mixing bowl, add the spinach and pour in the tofu mixture. In another mixing bowl, mix in the skewed tomatoes with the tomato paste that you have.
On the baking pan, layer the tomatoes, the lasagna noodles and then the tofu-spinach mixture. Layer them in a way that you have two layers of the noodles and between them the tomato and tofu mix.
Bake your lasagna in the pre-heated oven for half an hour. Serve hot.