My dad's lasagna

Ingredients:
2 boxes lasagna noodles
3 8oz. containers parmesan cheese
Red Sauce- 1st set:
1/2 cup butter
2 large onion, minced
3 Tab. olive oil
3 cloves garlic, minced
1 1/2 Tab. italian seasoning
1 large carrot, minced
Red Sauce- 2nd set:
4 28oz. cans crushed tomatoes
4 6oz. can tomato paste
1 1/2 lb. hamburger
1 1/2 Tab. salt
White Sauce:
1/2 cup butter
1/2 cup flour
1 qt. half and half

1. Combine the first set sof red sauce ingredients. Simmer for 10 minutes.
2. Add second set of red sauce ingredients. Simmer for 20 minutes.
3. Bring a pot of water to boil for noodles and cook as directed on package. Strain and rinse in cold water. Lay out to dry.
4. White sauce: melt butter in another pan, add flour and whisk together for 1 minute. Whisk in half and half and cook on medium/low until thick, about 20 minutes. Stir often, careful not to let it burn.
5. Preheat oven to 350. Pour 1/2 cup red sauce in bottom of 13x9 pan to cover bottom. Layer with 3 noodles, 1 cup red sauce, 1 cup white sauce, 1 1/2 cup parmesan cheese. Repeat 3 times ending with parmesan on top.
6. Cook for about 30-60 minutes. Let stand for 30 minutes before serving.