Half-and-Half (Best Option)
1 cup per 1 cup whole milkHalf-and-half contains approximately 10-12% fat, which is closer to whole milk's 3.5-4% fat but with more richness. This fat content helps retain moisture and tenderness in the brownies, supporting the Maillard reaction and crumb structure.
When substituting, use half-and-half in a 1:1 ratio. Watch for slightly denser batter; mixing gently can help maintain aeration. No other adjustments are necessary.
The final brownies will be richer and more moist, with a slightly creamier texture compared to whole milk, enhancing the overall indulgence without compromising structure.