Classic Lasagna - cooking recipe

Ingredients

1 lb ground beef
3/4 cup chopped onion
2 tablespoons salad oil (recipe calls for but I do not use) or 2 tablespoons olive oil (recipe calls for but I do not use)
1 (1 lb) can tomatoes
2 (6 ounce) cans tomato paste
2 cups water
1 tablespoon chopped parsley
2 teaspoons salt
1 teaspoon sugar
1 teaspoon garlic powder
1/2 teaspoon pepper
1/2 teaspoon oregano leaves
8 ounces lasagna noodles
1 lb ricotta cheese
8 ounces mozzarella cheese (shredded or thinly sliced)
1 cup grated parmesan cheese

Preparation

In large heavy pan, lightly brown beef and onion in oil.
Add tomatoes (put through blender or cut with edge of spoon), tomato paste, water, parsley, salt, sugar, garlic powder, pepper, and oregano.
Simmer uncovered, stirring occasionally, 30 minutes.
Meanwhile cook lasagna as directed on package.
Drain lasagna.
In 13x9x2-inch baking pan, spread about 1 cup sauce.
Alternate layers of lasagna, sauce, ricotta, mozzarella, and parmesan cheese, ending with sauce, mozzarella, and parmesan cheese.
Bake at 350\u00b0F for 40-50 minutes until lightly brown and bubbly.
Allow to stand 15 minutes; cut in squares to serve.