In a small bowl or jar, whisk or shake the ingredients for the dressing together until well blended.
⅓ cup olive oil, 3 tablespoons fresh lemon juice, 2 teaspoons stone ground mustard, ½ teaspoon minced garlic, ½ teaspoon dried oregano, ⅛ teaspoon dried parsley, ⅛ teaspoon onion powder, ⅛ teaspoon black pepper, kosher salt