In a medium saucepan, melt the butter over medium heat.

Add minced garlic to the saucepan and sauté until fragrant, about 1 minute.

Whisk in the flour and cook for another minute to form a roux.

Gradually add the milk and heavy cream, whisking continuously until the mixture is smooth and begins to thicken.

Stir in the grated Parmesan cheese, dried oregano, dried basil, salt, and pepper.

Continue to cook, stirring frequently, until the sauce has thickened to your desired consistency.

Remove from heat and let cool slightly before using as a pizza sauce.