Greek Yogurt (Best Option)
1:1 (1 cup Greek yogurt per 1 cup cream cheese)Greek yogurt works well because it has a thick consistency and acidity similar to cream cheese, which helps tenderize the gluten and adds moisture to the biscuit dough. The protein content also supports structure without making the dough too wet.
For best results, use full-fat Greek yogurt and drain any excess whey if it seems too loose. Mix gently to avoid overworking the dough, which can toughen biscuits.
Biscuits made with Greek yogurt will be slightly tangier and lighter in texture but still moist and tender, closely mimicking the qualities cream cheese imparts.