Melted Coconut Oil (Best Option)
1:1 (1 cup melted coconut oil per 1 cup vegetable oil)Coconut oil is primarily saturated fat, similar to vegetable oil's unsaturated fat content, but it melts at a similar temperature, which helps maintain the cookie's structure and moisture retention. The fat coats flour proteins, limiting gluten development and ensuring tenderness.
Use refined coconut oil to avoid coconut flavor if undesired. Melt it gently to liquid form before mixing to ensure even distribution. Avoid overheating to prevent flavor changes.
Compared to vegetable oil, cookies may be slightly firmer and have a subtle coconut note if unrefined oil is used, but overall texture and spread remain close to the original.