'1/2 finely chopped onion'
'1 tablespoon olive oil'
'1 cup tomato sauce'
'Salt, black pepper, and grated cheese to taste'
'2 cups white sauce'
'1 package cooked rigatone pasta'
'2 cups cooked fish fillets (cod or tilapia)'
'1/2 finely chopped onion'
'1 tablespoon olive oil'
'1 cup tomato sauce'
'Salt, black pepper, and grated cheese to taste'
'2 cups white sauce'
'1 package cooked rigatone pasta'
'2 cups cooked fish fillets (cod or tilapia)'
'Sauté the onion in olive oil and add tomato sauce.'
'Season with salt and black pepper and cook for five minutes.'
'Add white sauce and cook for two minutes.'
'In a greased baking dish, spread a little of the sauce.'
'Cover with a layer of pasta and arrange the fish fillets on top.'
'Repeat the layers until all ingredients are used, finishing with grated cheese.'
'Bake in the oven to gratinate.'