Let’s start the making process!
Take a bowl and put butter and sugar(brown and white both).Beat until it turns to creamy texture. Add egg to this mixture and beat well for 2 min.
Now take another bowl. Put all purpose flour, oat, cinnamon, nutmeg ,baking soda and salt and mix well. Once done add this dry mixture to the above bowl( where already butter and sugar creamy mixture is ready. Add slowly and mix with spatula.
Keep in mind that the dough should be soft. Cover dough with one dry cloth or aluminum foil. Keep in the refrigerator for 20 min.
Now heat the oven at 350 degrees.

Take a try. Spread some oil or butter on it with the help of a brush.
Now remove the dough from the freeze and make a round shape of it. Put all these round balls in try. Decorate with nuts if you want.
Bake it for 10-11 min for crunchy cookies.
After 11 min remove from the oven and let it put on cold or under fan.

So it is ready now to serve! Enjoy the cookie!