Greek Yogurt (Best Option)
1:1 (1/4 cup Greek yogurt per 1/4 cup cream cheese)Greek yogurt works well because it has a thick, creamy texture and acidity similar to cream cheese, which helps maintain the muffin’s moisture and tender crumb. The protein content also supports structure without making the batter too loose.
For best results, use full-fat Greek yogurt and drain any excess whey if it’s very watery to avoid thinning the batter excessively. Incorporate it gently to maintain batter aeration.
Compared to cream cheese, muffins made with Greek yogurt may be slightly less rich but will retain a pleasant tang and moist texture, making it the closest functional and flavor match.