Ingredients:
Melt the butter in a sauce pan and sauté the onion and garlic. Add flour and mix well. Slowly add half of the cream while mixing. Add the remaining cream and continue stirring (add milk to thin sauce if needed).
Stir in the cheeses until melted. Slowly mix in spaghetti sauce, season with dried basil, and blend together. Serve over pasta with freshly grated parmesan cheese.