Ultimate Pizza Sauce

INGREDIENTS

• 2 tablespoons olive oil
• 1 tablespoon butter
• 1/2 cup onion, chopped
• 1/4 cup celery, chopped
• 1 garlic clove, minced
• 1 (8 ounce) can tomato sauce
• 1 (6 ounce) can tomato paste
• 2 tablespoons grated parmesan cheese
• 1 teaspoon dried basil
• 1 teaspoon dried oregano
• 1/2 teaspoon salt
• 1/2 teaspoon sugar
• 1/4 teaspoon black pepper
• 1 small bay leaf
• 1 teaspoon fennel seed