Whisk together the olive oil, balsamic vinegar, soy sauce, maple syrup, onion powder, garlic, oregano, salt and pepper.
½ cup olive oil, ¼ cup balsamic vinegar, 1 tablespoon low-sodium soy sauce, 2 tablespoons maple syrup, ½ teaspoon onion powder, 4 cloves garlic, 1 teaspoon oregano, ¾ teaspoon kosher salt, ¼ teaspoon ground black pepper