Preheat oven to 350°F. Grease two 9 inch loaf pans or 24 muffins.
In a stand mixer or a large bowl with beaters cream the butter and sugar.
Mix in applesauce, eggs (one at a time), bananas, vanilla, and milk.
Add flour, baking soda and salt to the bowl and mix well. If mixing in chocolate chips or nuts add them at this time.
Pour into greased pans. If you want the chocolate chips or nuts only on top Sprinkle on at this time.
Bake at 350°F for 60-70 minutes until a fork comes out clean when poked. Bake muffins for 20-25 minutes. Cool on wire rack.