Unsalted Butter (Best Option)
1:1 by volume (e.g., 1/4 cup butter for 1/4 cup coconut oil)Butter works well because it is a solid fat at room temperature, similar to coconut oil, which helps create a tender crumb and supports gluten structure in yeast bread. The fat coats flour proteins, limiting gluten overdevelopment and promoting a soft texture.
When substituting, ensure the butter is softened but not melted to mimic coconut oil's solid state. Avoid using salted butter to control salt levels in the dough. Watch dough hydration as butter contains about 15-20% water, which may slightly affect dough consistency.
The final bread will have a richer, slightly buttery flavor and a tender crumb comparable to coconut oil, though less coconut aroma and a slightly different mouthfeel.