I like to use u003ca href=u0022https://www.yummytoddlerfood.com/super-easy-crockpot-applesauce/u0022u003eunsweetened applesauce u003c/au003ethat's smooth or almost smooth. Chunky applesauce is okay as long as you know that you might wind up with piece of applesauce chunks in the final muffins! Just use one that you like the taste of to ensure that there's good flavor in the muffins.u003cbr/u003eu003cbr/u003eYou can use store-bought or homemade—both work fine. Sometimes the color of the muffins can be lighter or darker according to the color of the applesauce.