Add Flour: Stir in the flour and cook for another minute, whisking constantly to form a roux.
Add Milk & Cream: Gradually add the milk and heavy cream, whisking until smooth. Bring to a gentle simmer and cook until the sauce begins to thicken, about 3–5 minutes.
Stir in Cheese & Seasonings: Stir in the Parmesan cheese, salt, pepper, and Italian seasoning. Continue to stir until the cheese melts and the sauce is smooth and creamy.
Cool & Use: Remove from heat and let cool slightly before spreading on pizza dough.
Notes
This sauce makes enough for two 12-inch pizzas.
Store leftovers in the refrigerator for up to 4 days.
For a thinner consistency, add a splash of milk.
Use freshly grated Parmesan for the best flavor and texture.