Greek Yogurt (Best Option)
1:1 by volume (e.g., 1/4 cup Greek yogurt per 1/4 cup cream cheese)Greek yogurt has a thick, creamy texture with a tangy flavor profile similar to cream cheese, making it a suitable substitute in mashed potato toppings. The protein content helps maintain structure and moisture balance in the dish.
When substituting, ensure the yogurt is well-drained or strained if too watery to avoid excess moisture that could make the topping soggy. Mix gently to maintain the fluffy texture of the potatoes.
Compared to cream cheese, Greek yogurt results in a slightly lighter and tangier topping, which can brighten the overall flavor of the Shepherd's Pie without compromising texture.