Can you use mayonnaise instead of vegetable oil in blueberry muffins?

It's not recommended to use mayonnaise instead of vegetable oil in blueberry muffins. Here's why:

* Flavor: Mayonnaise has a strong, distinct flavor that will clash with the sweetness of the muffins and the delicate flavor of blueberries.

* Texture: Mayonnaise is an emulsion of oil and eggs, which can make the muffins dense and greasy. The oil in vegetable oil provides a lighter, airier texture.

* Consistency: Mayonnaise is a thick, creamy paste, while vegetable oil is a liquid. This difference in consistency will affect the mixing process and the final texture of the muffins.

Alternatives to Vegetable Oil in Blueberry Muffins:

* Applesauce: Applesauce is a great oil substitute and adds moisture and a subtle sweetness to the muffins.

* Avocado: Mashed avocado can also be used as a substitute for oil. It adds a slight richness and creaminess to the muffins.

* Butter: Melted butter can be used in place of oil, but it will result in a slightly denser texture.

If you're looking for a way to make your blueberry muffins richer or more decadent, you could add a small amount of melted butter or a dollop of sour cream to the batter. However, avoid replacing all of the oil with these ingredients.