Dad's Ultimate Pizza Sauce

Melt butter with olive oil in a large skillet over medium heat. Cook and stir onion celery and garlic in the butter mixture until the onion is soft and translucent 5 to 7 minutes.

Stir tomato sauce and tomato paste into the onion mixture until smooth; add Parmesan cheese fennel seeds basil oregano salt sugar pepper and bay leaf. Stir the sauce and bring to a slow simmer; cook at a slow simmer for 1 hour. Remove and discard bay leaf before use.