Cook Italian sausage, onion and garlic in skillet until light brown; drain.
Add tomatoes (with liquid), tomato sauce, 2 tablespoons of parsley, the sugar, basil, and ½ teaspoon salt. Heat to boil, stirring occasionally, reduce heat. Simmer uncovered until consistency of thick spaghetti sauce (1 hr.).
Cook noodles per instructions. Reserve ½ cup of sauce mixture. Mix Ricotta cheese, ¼ cup Parmesan cheese, 1 tablespoon parsley, 1 ½ teaspoon salt, and the oregano.
Layer ⅓ each of the noodles, remaining sauce mix, mozzarella cheese and Ricotta cheese mixture in ungreased 13x9 inch pan. Repeat two times.
Spoon reserved sauce mixture onto top; sprinkle with ¼ cup Parmesan cheese.
Cook uncovered in 350° oven for 45 minutes; let stand 15 minutes before cutting.
Note: After cooking, lasagna can be frozen for up to 3 weeks. Reheat at 375° until bubbly (1 hour).
