Step 1

Heat olive oil in saucepan over medium until shimmering. Add minced garlic, cook for 30 seconds. Add oregano and pepper, and cook for an additional 30 seconds. Mix flour in and continue cooking 1 minute.

Step 2

Slowly whisk in milk and continue whisking until smooth and bubbly and desired consistency is achieved, about 2 minutes (remember - sauce will thicken as it cools). Add salt. Turn off burner then add parmesan cheese, whisking until incorporated. If sauce thickens too much, whisk in more milk 1 tbsp at a time.