Rich and Savory Italian Ravioli Sauce

Ingredients

• 2 tablespoons olive oil
• 1 medium onion, finely chopped
• 3 cloves garlic, minced
• 1 can (28 ounces) crushed tomatoes
• 1/4 cup tomato paste
• 1/2 cup heavy cream
• 1/4 cup red wine (optional)
• 1 teaspoon dried basil
• 1 teaspoon dried oregano
• 1/2 teaspoon red pepper flakes (optional)
• Salt
• freshly ground black pepper
• 1/2 cup grated Parmesan cheese
• Fresh basil leaves, for garnish
• 2 tablespoons unsalted butter