Elevate your pizza, pasta, or chicken dish with this luscious white sauce, bursting with flavors from milk, Parmesan cheese, garlic, basil, and oregano.
Prepare all ingredients.
In a small saucepan over medium heat, combine butter and olive oil. Stir in onion and garlic.
Whisk in flour until it turns lightly brown and the onion softens slightly (about 2 minutes).
Pour in milk, Parmesan cheese, basil, oregano, salt, and black pepper. Cook while continuously whisking until the cheese melts and the sauce thickens a bit (around 5 minutes).
If the sauce is too thick for your liking, add more milk.
Remove from heat.
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