Sear 1 lb ground pork and 2 lb ground beef in 2 T olive oil until browned.
Add 2 c chopped onion and soften in rendered fat for 5 mins.
Add 1 quart tomato puree and 1 quart water and braise 2 hours, adding additional water if needed to moisten. Once cooking complete, if you want a creamier sauce, pulse once or twice in a vitamix or cuisinart.
Melt 2 T butter and whisk in 2 T flour, cook over medium 2 mins.
Add 2 c milk and whisk until creamy, simmer 5 mins.
Add 1/2 c grated parmigiano, salt and pepper to taste.
Take a deep loaf pan and pour 2 T olive oil into bottom.
Layer in uncooked noodles on the bottom, then a 1/3 inch of Bolognese sauce and two slices of provolone cheese. Then add another layer of noodles and a 1/2 inch of the cheese sauce. Repeat the sequence, until pan is full. Layer another 2 or three slices of provolone across the top.
Bake at 400 for 45 mins, fully cool and enjoy