โญ Vegetable Oil (Best Vegan Option)
3/4 cup oil per 1 cup butterVegetable oil is 100% fat without water content, unlike butter which is about 80% fat and 20% water. This difference means oil adds moisture but can make muffins denser and less tender if used in a 1:1 ratio. Reducing the oil amount to 3/4 cup compensates for the lack of water.
Mix oil thoroughly with wet ingredients to ensure even distribution. Avoid overmixing the batter to prevent toughness.
Muffins with vegetable oil tend to have a moist crumb but lack the slight richness and flakiness butter imparts, resulting in a softer but less flavorful product.