Whole Milk and Butter (Best Option)
3/4 cup whole milk + 1/4 cup melted butter per 1 cup heavy creamHeavy cream is approximately 36-40% fat, which contributes to the moisture, tenderness, and richness of brownies. Combining whole milk (3.25% fat) with melted butter (80% fat) increases the overall fat content to approximate that of heavy cream, ensuring similar mouthfeel and texture.
To use this substitute effectively, melt the butter and mix it thoroughly with the milk before incorporating it into the batter to ensure even fat distribution. Avoid overheating the mixture to prevent curdling.
Compared to using heavy cream directly, this substitute maintains the fudginess and richness expected in brownies with minimal impact on flavor, making it the closest match in texture and moisture.