Aubri's Oatmeal Cookies

Aubri has a severe egg allergy so we are always on the lookout for a good eggless recipe. My Mamaw found this one, she tried it, and, then, passed this wonderful recipe along to us.
And, let me tell you...
They. Are. Good.
These cookies are now a staple in our house.

Aubri's Oatmeal Cookies:

ingredients:
2 cups rolled oats
1 cup packed brown sugar
1/2 cup sugar
1 cup all-purpose flour
1/4 teaspoon salt
1 teaspoon baking soda
1/4 cup hot water
1/2 cup butter, melted and cooled
1 teaspoon vanilla extract

Directions:
In a mixing bowl, combine oats, sugars, flour and salt. Combine baking soda and water; stir into oat mixture along with butter and vanilla. Roll in to walnut-sized balls. Place on cookie sheets with nonstick cooking spray (I use parchment paper, so I don't spray my pan.). Bake at 350 degrees for 10 minutes or until golden brown. Remove from the oven; cool for 2 minutes before moving to wire rack. Yield: approx. 3 dozen

Wes likes these cookies the best when I add chocolate chips to the mix. My Mamaw has also made them with peanut butter.
Let me know what you think and if you add any extra ingredients!