Applesauce Muffins

1 stick butter, soft
¾ c. brown sugar
¾ c. applesauce
1 egg
1 c. flour
1 tsp. baking powder
½ tsp cinnamon
¼ tsp. salt
¼ tsp. baking soda
1 c. oats

Mix. Scrape bowl occasionally. Cook in greased or lined muffin tin at 400 for 20 minutes.