Heat some olive oil in a pot.
Add the onions and saute`.
When they turn golden brown, add the finely chopped garlic.
Now add the other seasonings & spinach along with the tomato paste and the cut tomatoes.
Add 2 cups of water and simmer the gravy in low heat for about
20 - 25 minutes.
Now take a 1.5 inches (round) (oven safe) and coat the vessel with 1 tsp of olive oil.
Start layering with the pasta strips at the very bottom followed by generous helping of sauce and then the Ricotta cheese followed by one thin layer of Mozerella.
Continue the same order until it reaches the top of the vessel.
Finally, top it with the Lasagna strips and pour the excess sauce on it.
Keep them in a preheated oven at 300 degrees for 20 - 25 minutes.
:-Double the amount of sauce and ingredients for bigger pans.
:-Serve them hot with good red wine.