Combine the ingredients: Place the extra-virgin olive oil, white wine vinegar, Dijon mustard, minced garlic, grated Parmesan cheese, Italian seasoning, salt, and black pepper into a small food processor, blender, or mason jar.
Blend or shake: If using a blender or food processor, blend until smooth and fully emulsified. If using a mason jar, seal the lid tightly and shake vigorously until well combined.
Taste and adjust: Taste the dressing and add an extra pinch of salt, pepper, or a splash more vinegar if you prefer a sharper tang.
Rest and serve: Let the dressing sit for 10 minutes before serving so the garlic and herbs meld into the olive oil and cheese.