In a separate bowl, whisk together mayo, Greek yogurt, garlic, lemon juice, grated garlic, olive oil, maple syrup or honey, salt, pepper, dill and parsley. Whisk until smooth. Add parmesan and whisk until thick and combined. Adjust seasonings to taste. To thin out the dressing, add a splash of water.
1/2 cup Greek yogurt, 3/4 cup mayonnaise, 1/2 cup freshly grated parmesan, 1 garlic clove, grated, 1/2 small lemon, juiced, 1 bunch fresh dill, chopped, 2 Tablespons fresh parsley, chopped, 2 Tablespoons olive oil, salt and pepper, to taste, 1 Tablespoon maple syrup or honey