Lasagna Rolls - cooking recipe

Ingredients

1 tsp. salad oil
1 medium onion, finely chopped
1 (28 oz.) can Italian plum tomatoes
1 (6 oz.) can tomato paste
2 tsp. sugar
1/2 tsp. Italian herb seasoning salt
8 oz. curly lasagna noodles (about 9)
1 (10 oz.) pkg. frozen, chopped spinach
1 (15 oz.) reduced fat or fat-free Ricotta cheese
2 Tbsp. grated Parmesan cheese
1/8 tsp. ground black pepper
salt
3/4 c. water

Preparation

Prepare sauce:
In 10-inch skillet over medium heat, cook onion in hot oil (until tender).
Add tomatoes and their liquid, tomato paste, sugar, herb seasoning, 1/2 teaspoon salt and 3/4 cup water.
Heat to boiling, stirring to break up tomatoes.
Reduce heat to low; cover and simmer 15 minutes; stir occasionally.