⭐ Sour Cream (Best Nut-Free Option)
1:1 (replace Greek yogurt with equal amount of sour cream)Sour cream works well because it has a comparable fat content and acidity level to Greek yogurt, which helps activate baking soda or powder and contributes to the cookie’s rise and tenderness. The tanginess also complements the chocolate chips nicely.
When using sour cream, ensure it is full-fat for best texture and avoid low-fat versions that can dry out the dough. Mix it gently into the dough to maintain the desired consistency.
Cookies made with sour cream will have a slightly richer flavor and similar chewiness to those made with Greek yogurt, making it the closest substitute in terms of both chemistry and sensory outcome.