Add tomatoes, tomato paste, parsley, basil, salt, pepper and 3 T grated parmesan. Mix well and simmer for 45 minute.
Cook Lasagne noodles in 6 qts of boiling water for 20 minutes or until tender.
Put a couple of spoonfuls of sauce of bottom of 13 x 9 pan. Arrange half of noodles on next. Spread 1/2 the ricotta or cottage cheese and 1/2 the mozzarella over noodles. Top with 1/2 the sauce. Then repeat the layers. Top with 1/2 C parmesan cheese.