Heat oil in a large skillet over medium heat. Saute onions until soft. Stir in ground beef, and cook until evenly brown. Drain excess fat. Season with Italian seasoning, rosemary, garlic salt, salt and pepper. Stir in tomatoes, tomato paste and water. Simmer 1 hour, or until sauce has thickened.
Melt butter in a saucepan over medium heat. Cook onion until soft and translucent. Stir in flour until smooth. Stir in Parmesan cheese, then milk. Cook, stirring, until thick. Allow to cool, then stir in egg. (Sauce will be very thick.)
Preheat oven to 350 degrees F (175 degrees C). Bring a large pot of lightly salted water to a boil. Add pasta and cook for 8 to 10 minutes or until al dente; drain. Lightly grease a 9x13 inch baking dish.
In prepared baking dish, place a layer of noodles, meat sauce, cheese sauce, ricotta, and mozzarella. Repeat layers. Build to your desired thickness, or make another smaller pan for freezing.
Bake in preheated oven for 1 hour. Let cool 15 minutes before serving.

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Nutrition Facts

Per Serving Per 100 g

Amount Per 1 Serving
Calories	557.31 Kcal (2333 kJ)
Calories from fat	269.94 Kcal
		% Daily Value*
Total Fat	29.99g	46%
Cholesterol	118.38mg	39%
Sodium	1123.05mg	47%
Potassium	806.21mg	17%
Total Carbs	16.11g	5%
Sugars	9.04g	36%
Dietary Fiber	2.21g	9%
Protein	54.6g	109%
Vitamin C	4.2mg	7%
Vitamin A	0.1mg	5%
Iron	2.8mg	16%
Calcium	953.9mg	95%

Amount Per 100 g
Calories	133.17 Kcal (558 kJ)
Calories from fat	64.5 Kcal
		% Daily Value*
Total Fat	7.17g	46%
Cholesterol	28.29mg	39%
Sodium	268.35mg	47%
Potassium	192.64mg	17%
Total Carbs	3.85g	5%
Sugars	2.16g	36%
Dietary Fiber	0.53g	9%
Protein	13.05g	109%
Vitamin C	1mg	7%
Iron	0.7mg	16%
Calcium	227.9mg	95%

* Percent Daily Values are based on a 2000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
Find out how many calories should you eat.