Preparing spinach lasagna is very easy and not expensive at all. First, in a bowl, add the cooked spinach with ricotta cheese. Mix them well for a couple of minutes.
Second, add pepper and salt. Mix them again. You can add any spices you want.
Thirdly, in a casserole dish, line the base with a layer of bechamel sauce. Add a layer of semi-cooked pasta until cover all the casserole dish.
After that, add another layer of bechamel sauce. Now, add the first layer of the mixture that we made before. Make sure to spread it evenly. Finish the layer with a sprinkle of parmesan cheese.
Now, we already finished the first layer so what you need to do is repeat the same process until the casserole is full.
We are already in the last step. Enter the casserole into the oven at 160 degrees Celsius for 1 hour. When the lasagna is cooked get it out of the oven and let it rest for 10 minutes. Serve it. Cheers!!!