⭐ Unsalted Butter (Best Gluten-Free Option)
1:1 by volume (e.g., 1 cup butter for 1 cup coconut oil)Unsalted butter closely matches the fat content and physical properties of coconut oil, which is crucial for the structure and moisture retention in pound cake. Butter’s melting behavior during baking helps create a tender, fine crumb.
For best results, use softened butter at room temperature to cream properly with sugar, ensuring even aeration. Avoid melted butter as it can lead to a denser texture.
Compared to coconut oil, butter imparts a classic buttery flavor and slightly less tropical aroma, but the overall texture and richness remain very similar, making it the top substitute.